Technical Service Bulletins (TSBs) for the 2021 Sierra 2500 are official communications between GMC & their dealerships that describe processes for troubleshooting or fixing certain common problems.
All vehicle manufacturers are required by U.S. law to make their TSBs available to the public.
This service bulletin helps diagnose/reduce possible CCND issues on Transfer Cases - Service 4WD on DIC, Intermittent Failures, Noise Concerns, Driveline/Steering Vibration/Shudder, Intermittent DTCs/MIL Illuminated, ... Read More »
This service bulletin helps diagnose/reduce possible CCND issues on Transfer Cases - Service 4WD on DIC, Intermittent Failures, Noise Concerns, Driveline/Steering Vibration/Shudder, Intermittent DTCs/MIL Illuminated, ... Read More »
This service bulletin provides a vibration analysis worksheet the technician can use in conjunction with the appropriate Vibration Analysis-Road testing procedure when diagnosing vibration concerns. Read More »
This service bulletin helps diagnose/reduce possible CCND issues on Transfer Cases - Service 4WD on DIC, Intermittent Failures, Noise Concerns, Driveline/Steering Vibration/Shudder, Intermittent DTCs/MIL Illuminated, ... Read More »
This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage. Read More »
This Preliminary information communicates information on a hydrauilc rush type noise from the power steering gear. This noise is a characteristic of the new Active Hydraulic Assist System RPO NV8 and no repairs should be made. Read More »
This preliminary informational (PI) bulletin provides information to dealership personnel which may be helpful when addressing underbody component corrosion with customers. Read More »
This service bulletin provides a procedure to flush and bleed power steering system to correct a power steering noise or fluid leak concern that is caused during extremely low temperatures. Read More »
This Preliminary information communicates information on a hydrauilc rush type noise from the power steering gear. This noise is a characteristic of the new Active Hydraulic Assist System RPO NV8 and no repairs should be made. Read More »
This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage. Read More »
This service bulletin provides a procedure inspecting for excess grease or Sealant on the Exterior of the steering gear due to seeing grease or sealant on certain locations on the gear. Read More »
This Preliminary information communicates an issues with a pop, clunk, knock, rattle type noise heard from the steering column over bumps and ask dealerships to replace the upper column shaft. Read More »
This Preliminary information communicates information on a hydrauilc rush type noise from the power steering gear. This noise is a characteristic of the new Active Hydraulic Assist System RPO NV8 and no repairs should be made. Read More »
This Preliminary information communicates an issues with a pop, clunk, knock, rattle type noise heard from the steering column over bumps and ask dealerships to replace the upper column shaft. Read More »
This service bulletin provides a procedure inspecting for excess grease or Sealant on the Exterior of the steering gear due to seeing grease or sealant on certain locations on the gear. Read More »
This Preliminary information communicates information on a hydrauilc rush type noise from the power steering gear. This noise is a characteristic of the new Active Hydraulic Assist System RPO NV8 and no repairs should be made. Read More »
This technical bulletin provides repair information to correct a customer concern of steering wheel oscillation, vibration, shake 50-80 mph. Read More »
Service Update - Certain vehicles may have a condition in which the Power Assist Steps reverse while deploying or stowing. Dealers will reprogram the Assist Step Control Module. Read More »
This technical bulletin provides a procedure to re-torque the leaf spring u bolts to correct a condition of Clunking Noise from Rear of Vehicle (Re-torque Leaf Spring Bolts). Read More »
This service bulletin provides a vibration analysis worksheet the technician can use in conjunction with the appropriate Vibration Analysis-Road testing procedure when diagnosing vibration concerns. Read More »
This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage. Read More »
This Preliminary information communicates a diagnostic tip for a thump, click, pop, clunk type noise that is heard from the front end. Dealers are to inspect for something contacting the grill shutters as they open and close. Read More »
This preliminary informational (PI) bulletin provides information to dealership personnel which may be helpful when addressing underbody component corrosion with customers. Read More »
This service bulletin provides a repair procedure to correct a customer concern of a Squeak, Grind or Clunking Noise from Rear Leaf Springs. Read More »
This service bulletin provides a repair procedure to correct a customer concern of a Squeak, Grind or Clunking Noise from Rear Leaf Springs. Read More »
This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage. Read More »
This technical bulletin provides a procedure to re-torque the leaf spring u bolts to correct a condition of Clunking Noise from Rear of Vehicle (Re-torque Leaf Spring Bolts). Read More »
This service bulletin provides information to dealership personnel on diagnosis and replacement of shock absorber and strut due to fluid leak. Read More »
This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage. Read More »
This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage. Read More »
This Preliminary Information communication provides information to the technician about fluid leaking from the brake caliper piston area found during a service of the vehicle. Read More »
This informational bulletin provides an optional repair using a different set of brakes that may correct the customers concern of Early Brake Wear in Harsh Environments. Read More »
This Preliminary Information communication advises the technician that the Hydro-Boost is not serviceable and will need to be replaced if the brake pedal moves or applies on its own at a full turn. Read More »
This informational bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer. Read More »
This service bulletin provides repair information to correct customer concerns of Rear Wheel Lock Up, ABS Event, Loud Bang and a Flashing ?D? on Driver Information Center (DIC) when Lightly or Moderately Accelerating Forcing an 8-7 or 8-6 ... Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards the trailer brake being inoperative and/or check trailer brakes message on ... Read More »
This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the ABS or the traction control message illuminated in the Drivers Information ... Read More »
This informational bulletin advises the technician to check for faults that may be caused by the trailer otherwise found by a possible faulty trailer connector. Read More »
This informational bulletin provides an optional repair using a different set of brakes that may correct the customers concern of Early Brake Wear in Harsh Environments. Read More »
This informational bulletin provides an optional repair using a different set of brakes that may correct the customers concern of Early Brake Wear in Harsh Environments. Read More »
This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage. Read More »
Service Update Bulletin. Certain vehicles may have an erratic signal coming from the engine manifold absolute pressure (MAP) sensor. Customers may notice the service engine soon (SES) lamp illuminate or was illuminated and turned off. Read More »
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:ABS WARNING LIGHT
This service bulletin provides a diagnostic procedure to aid in correcting a customer concern of a Howling, Whining/Whirring Noise, Shudder/Vibration and/or Grinding Noise While in 4HI, 4HI Auto and/or During Parking Lot Maneuvers in Auto ... Read More »
This Preliminary information communicates to the dealer technicians a warm engine knock noise has no short or long term effects on the engine. Do not attempt repairs for this noise. Read More »
This Preliminary Information communication advises the technician with a tip when the vehicle stops running after it has been idling for 2.5 hours. Read More »
This bulletin provides information on common diesel engine tick noises and how they are considered part of normal operation and no parts should be replaced for these normal operating conditions. Read More »
This service bulletin provides policy information on warranty administration guidelines for multiple repairs with independent causes (GM Canada Dealers Only). Read More »
This Preliminary information communicates the possibility of dtc p06DD due to low or no oil pressure immediately following engine oil and filter change due to oil filter and main oil gallery being drained or empty. Read More »
This Preliminary information communicates to the dealership technician a change made to the wire harness and reductant control module for the Diesel Exhaust Fluid tank connector. Read More »
This service bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement. Read More »
This Preliminary Information communication provides information to the technician that General Motors Technical Assistance Center may ask for Global Diagnostic System 2 Session Log. Read More »
This Preliminary Information communication advises the technician with a tip when the vehicle stops running after it has been idling for 2.5 hours. Read More »
This Preliminary information communicates diagnostics to the dealer involving a vehicle shudder concern caused by the camshaft actuator system that can be mistaken for a transmission issue. Read More »
This preliminary information bulletin instructs to technicians to check the trigger wheel for interfering with the timing chain, and adding a shim to the camshaft position sensor. Read More »
This service bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement. Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards the Service Engine Soon (SES) lamp illuminated and/or Service Emission System ... Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to one or more of the following condition Stalls, Crank with no star, Check ... Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the Service Engine Soon Lamp illuminated on Driver Information Center. Read More »
This service bulletin provides information on the cold start control system in DI engines to reduce cold start emissions and improve fuel economy. Read More »
This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage. Read More »
This Preliminary information communicates to dealership technicians that a P11D5 may be cause by a software anomaly, check to see if campaign N212331790 applies, reflash the ECM and release the vehicle. Read More »
This service bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement. Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards check to the engine lamp being illuminated on the drivers information center ... Read More »
This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to Service Engine Soon Lamp Illuminated On Driver Information Center (DIC), DTC ... Read More »
This Preliminary information communicates Possible Crank no start or extended crank with DTC p12A6 set current or history. Under Investigation Read More »
This Preliminary information communicates to the dealer technicians a warm engine knock noise has no short or long term effects on the engine. Do not attempt repairs for this noise. Read More »
This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations. Read More »
This engineering informational bulletin is requesting information from technicians to inspect for engine oil leak and contact the engineer listed. Read More »
This Preliminary information communicates Possible Crank no start or extended crank with DTC p12A6 set current or history. Under Investigation Read More »
This Preliminary information communicates Possible Crank no start or extended crank with DTC p12A6 set current or history. Under Investigation Read More »
This Preliminary information communicates the use of air leak diagnostic test tool CH-52250 in addition to the information found in the service manual. Read More »
This engineering informational bulletin is requesting information from technicians to inspect for engine oil leak and contact the engineer listed. Read More »
The informational bulletin advises the tech to use the glow plug bore cleaner to reduce the chance of soot building up on the glow plug causing a premature failure. Read More »
This technical bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels ... Read More »
This technical bulletin provides repair information to correct a customer concern of Evaporative DTCs P0442, P0446, P0455 or P0449, Caused by Dust Intrusion into the Evaporative Canister. Read More »
This service bulletin provides a repair procedure to correct customer concerns of Service Emissions System Displayed on DIC, MIL Illuminated with DTC P249C and/or P20E8 Set. Read More »
This Preliminary information communicates that some customers may comment that after an auto-stop event the engine does not restart and to inspect the engine ground strap. Temporarly on hold while PIE0572 is active. Read More »
This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large amounts of debris has flowed throughout the oiling system. Read More »
This service bulletin provides a repair procedure to correct customer concerns of Service Emissions System Displayed on DIC, MIL Illuminated with DTC P249C and/or P20E8 Set. Read More »
This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations. Read More »
This technical bulletin provides a procedure to program the Reductant Control Module and Setup and Perform the Reductant Fluid Tank Level Reset. Read More »
This Warranty Admin service bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and explains the PQC process, GWM Transaction submission, ... Read More »
This technical bulletin provides repair information to correct a customer concern of 2020 - 2022 Silverado and Sierra Equipped with Diesel Engine Setting DTCs P20BB or P20C3. Read More »
This technical bulletin provides a procedure to program the Reductant Control Module and Setup and Perform the Reductant Fluid Tank Level Reset. Read More »
This technical bulletin provides a procedure to program the Reductant Control Module and Setup and Perform the Reductant Fluid Tank Level Reset. Read More »
This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content. Read More »
This service bulletin provides a vibration analysis worksheet the technician can use in conjunction with the appropriate Vibration Analysis-Road testing procedure when diagnosing vibration concerns. Read More »
This technical bulletin provides a procedure to program the Reductant Control Module and Setup and Perform the Reductant Fluid Tank Level Reset. Read More »
This technical bulletin provides repair information to correct a customer concern of Evaporative DTCs P0442, P0446, P0455 or P0449, Caused by Dust Intrusion into the Evaporative Canister. Read More »
This service bulletin explains the difference in oil filters for gas engines with new oil pump control systems and the possibilities of what may happen using the incorrect filter. Read More »
The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the customer that it is normal for the delay. Read More »
This service bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement. Read More »
This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations. Read More »
This informational bulletin advised the technician that the engine and related parts will be debited if found that the tech didn't properly prepare the engine block from dirt and debris in bolt holes or if found that the block was damaged ... Read More »
This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage. Read More »
This technical bulletin provides a procedure to test and replace the high-pressure fuel injector electrical connectors if found the cause of the MIL. Read More »
This technical bulletin provides a procedure to replace the camshaft actuator magnet to correct customer concerns of engine related shudder. Read More »
This technical bulletin provides repair information to correct a customer concern of Evaporative DTCs P0442, P0446, P0455 or P0449, Caused by Dust Intrusion into the Evaporative Canister. Read More »
This service bulletin provides information to dealership personnel on automatic transmission shift and engine driveability concerns and/or MIL ON due to aftermarket oil bath air filter use. Read More »
This technical bulletin provides a procedure to program the Reductant Control Module and Setup and Perform the Reductant Fluid Tank Level Reset. Read More »
This preliminary informational (PI) bulletin provides information to dealership personnel which may be helpful when addressing underbody component corrosion with customers. Read More »
This technical bulletin provides a procedure to test and replace the high-pressure fuel injector electrical connectors if found the cause of the MIL. Read More »
This informational bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer. Read More »
This technical bulletin provides a procedure to program the Reductant Control Module and Setup and Perform the Reductant Fluid Tank Level Reset. Read More »
This service bulletin advises about the possible issues that may occur when using a scotch brite pad or highly abrasive disk on gasket sealing surfaces or reused parts. Read More »
This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage. Read More »
This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations. Read More »
This service bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement. Read More »
This bulletin provides information on common diesel engine tick noises and how they are considered part of normal operation and no parts should be replaced for these normal operating conditions. Read More »
This service bulletin provides a diagnostic aid procedure on how to perform a quick test to check if the DPF is the cause of excessive soot from the tailpipe. Read More »
This informational bulletin provides information on Clean Exhaust Filter See Owners Manual Now or Cleaning Exhaust Filter Keep Driving Until Message is Cleared messages Displayed on DIC, DTC P2463 May Be Set. Read More »
This technical bulletin provides a procedure to flush the cooler lines to validate if there is excessive debris in the fuel system caused by a failed part. Read More »
The informational bulletin advises the tech to use the glow plug bore cleaner to reduce the chance of soot building up on the glow plug causing a premature failure. Read More »
This technical bulletin provides a procedure to program the Reductant Control Module and Setup and Perform the Reductant Fluid Tank Level Reset. Read More »
This service bulletin provides information for U.S. dealers ONLY to refer to the Battery Maintenance Report to identify vehicles in dealer inventory that require attention. Read More »
This service bulletin provides information for U.S. dealers ONLY to refer to the Battery Maintenance Report to identify vehicles in dealer inventory that require attention. Read More »
This service bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement. Read More »
This service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to correct a customer concern of an MIL Illuminated with DTCs P0442 and/or P0455 Set. Read More »
This Warranty Admin service bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and explains the PQC process, GWM Transaction submission, ... Read More »
This bulletin provides information on Policies Applicable to All U.S. Dealers for Engine and Transmission Assembly Replacement Under Warranty, Policy or Customer Enthusiasm and information on Submission of Warranty Transaction in Global ... Read More »
This bulletin advises the technician to Inspect the position of the head gasket locating tabs to determine if the head gasket(s) has been possibly installed backwards to correct a concern of an Engine Thermostat Tick Noise and/or Running ... Read More »
This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large amounts of debris has flowed throughout the oiling system. Read More »
This technical bulletin provides a procedure to flush the cooler lines to validate if there is excessive debris in the fuel system caused by a failed part. Read More »
This bulletin advises the technician to Inspect the position of the head gasket locating tabs to determine if the head gasket(s) has been possibly installed backwards to correct a concern of an Engine Thermostat Tick Noise and/or Running ... Read More »
This Preliminary information communicates to the dealer technician that if the vehicle's engine coolant reservoir has transmission fluid in it or if Glycol it found in the transmission fluid the dealer should replace the Automatic ... Read More »
This Preliminary Information communication provides information to the technician about vehicles that may have a delayed engagement into drive, shudder at a launch, or the transmission is slipping when shifting into 1st, 2nd, 3rd or 4th ... Read More »
This engineering information (EI) closure ends the need for further information from the field in regards to Service Engine Soon (SES) Lamp illuminated and/or a??Service Emissions Systema?? message on the Driver Information Center (DIC). Read More »
This bulletin provides information on the TOP TIER Detergent Gasoline Licensed Brands and the TOP TIER Diesel Fuel Licensed Brands that are recommended for use in all GM vehicles and the TOP TIER FUELS website URL. Read More »
This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage. Read More »
This service bulletin provides a diagnostic aid procedure on how to perform a quick test to check if the DPF is the cause of excessive soot from the tailpipe. Read More »
This service bulletin provides service information for customer concerns of an in-tank fuel pump whining noise, engine hard to start and/or stalls and Malfunction Indicator Lamp (MIL) is illuminated that may be caused by gelling of fuel ... Read More »
This service bulletin advises about the possible issues that may occur when using a scotch brite pad or highly abrasive disk on gasket sealing surfaces or reused parts. Read More »
This informational bulletin provides information on Clean Exhaust Filter See Owners Manual Now or Cleaning Exhaust Filter Keep Driving Until Message is Cleared messages Displayed on DIC, DTC P2463 May Be Set. Read More »
This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage. Read More »
This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations. Read More »
This bulletin provides information on common diesel engine tick noises and how they are considered part of normal operation and no parts should be replaced for these normal operating conditions. Read More »
This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to Service Engine Soon (SES) Lamp illuminated and/or a??Service Emissions Systema?? ... Read More »
This bulletin provides information on tools available to find an intake vacuum leak or exhaust leak to correct a condition of MIL Illuminated with Multiple Fuel Trim and/or Oxygen Sensor Codes Set. Read More »
This service bulletin provides information on the cold start control system in DI engines to reduce cold start emissions and improve fuel economy. Read More »
This technical bulletin provides a procedure to program the Reductant Control Module and Setup and Perform the Reductant Fluid Tank Level Reset. Read More »
This technical bulletin provides a procedure to replace the camshaft actuator magnet to correct customer concerns of engine related shudder. Read More »
This service bulletin provides information for U.S. dealers ONLY to refer to the Battery Maintenance Report to identify vehicles in dealer inventory that require attention. Read More »
This engineering information (EI) closure ends the need for further information from the field in regards Service Emission System and/or DEF Level Low message on driver information center (DIC). Read More »
This service bulletin provides information for U.S. dealers ONLY to refer to the Battery Maintenance Report to identify vehicles in dealer inventory that require attention. Read More »
This service bulletin provides repair information to correct a customer concern of Possible Crank No Start or Extended Crank with DTC P12A6. Read More »
This informational bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer. Read More »
This informational bulletin explains the normal noises an engine may make when the ambient temperature outside is cold or the vehicle has sat for a few hours. Read More »
This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards Service Emission System and/or DEF Level Low message on driver information center ... Read More »
This technical bulletin provides a procedure to replace the camshaft actuator magnet to correct customer concerns of engine related shudder. Read More »
This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large amounts of debris has flowed throughout the oiling system. Read More »
This Preliminary information communicates to the dealer technician that if the vehicle's engine coolant reservoir has transmission fluid in it or if Glycol it found in the transmission fluid the dealer should replace the Automatic ... Read More »
This Preliminary information communicates the possibility of dtc p06DD due to low or no oil pressure immediately following engine oil and filter change due to oil filter and main oil gallery being drained or empty. Read More »
This Preliminary information communicates to the dealership technician a change made to the wire harness and reductant control module for the Diesel Exhaust Fluid tank connector. Read More »
This Preliminary information communicates to dealership technicians to perform a sweep of the coolant flow control valve and test the circuits before replacing the Engine Coolant Flow Control Valve, and to assist engineering in root ... Read More »
This Preliminary information communicates to technicians to replace the ECM and affected sensor if diagnostics leads to replacement of the ECM. Read More »
This Preliminary Information communication provides information to the technician about fluid leaking from the brake caliper piston area found during a service of the vehicle. Read More »
This Preliminary information communicates to the dealer an issue where a vehicle may be exhibiting an engine noise condiion. The dealer is instructed on how to isolate the noise to a specific area of the engine for further diagnosis. Read More »
This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 - P0308 and/or P050D Read More »
This service bulletin provides information for dealers/technicians and customers on steam/vapor coming from the front grille or radiator area. Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to why is Engineering seeking more details on what is driving Engine Oil ... Read More »
This service bulletin provides a procedure to correct a condition of a Service Emission System and/or Service Engine Soon Lamp Illuminated on Driver Information Center (DIC), DTC P208B Set. Read More »
This technical bulletin provides repair information to correct a customer concern of MIL Illuminated- ECM Update for P026C, P20EE, or P11D5. Read More »
This service bulletin provides repair information to correct a customer concern of Possible Crank No Start or Extended Crank with DTC P12A6. Read More »
This service bulletin provides information on the cold start control system in DI engines to reduce cold start emissions and improve fuel economy. Read More »
This technical bulletin provides a procedure to correct the condition of Information on Vehicles Engine Shuts Off After 30 or 60 Minutes of Idling. Read More »
This bulletin provides information on Policies Applicable to All U.S. Dealers for Engine and Transmission Assembly Replacement Under Warranty, Policy or Customer Enthusiasm and information on Submission of Warranty Transaction in Global ... Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to why is Engineering seeking more details on what is driving Engine Oil ... Read More »
This service bulletin provides a diagnostic procedure to aid in correcting a customer concern of a Howling, Whining/Whirring Noise, Shudder/Vibration and/or Grinding Noise While in 4HI, 4HI Auto and/or During Parking Lot Maneuvers in Auto ... Read More »
This Preliminary information communicates Possible Crank no start or extended crank with DTC p12A6 set current or history. Under Investigation Read More »
This Preliminary information communicates Possible Crank no start or extended crank with DTC p12A6 set current or history. Under Investigation Read More »
This engineering informational bulletin is requesting information from technicians to inspect for engine oil leak and contact the engineer listed. Read More »
Service Update. On certain vehicles equipped with a 6.6L diesel engine (RPO L5P), the DEF tank connector may overheat and set the following diagnostic codes (P10D9, P143C and P10F3), which will result in reduced engine speed. Read More »
This bulletin provides information on common diesel engine tick noises and how they are considered part of normal operation and no parts should be replaced for these normal operating conditions. Read More »
This technical bulletin provides a procedure to flush the cooler lines to validate if there is excessive debris in the fuel system caused by a failed part. Read More »
This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations. Read More »
ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM)
This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 - P0308 and/or P050D Read More »
This technical bulletin provides a procedure to replace the camshaft actuator magnet to correct customer concerns of engine related shudder. Read More »
This Preliminary information communicates Possible Crank no start or extended crank with DTC p12A6 set current or history. Under Investigation Read More »
This Preliminary information communicates the use of air leak diagnostic test tool CH-52250 in addition to the information found in the service manual. Read More »
ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS
This service bulletin provides information to correct a customer concern of an in-tank fuel pump whining noise, engine hard to start and/or stalls and Malfunction Indicator Lamp (MIL) is illuminated. Read More »
This informational bulletin provides information on Clean Exhaust Filter See Owner Manual Now or Cleaning Exhaust Filter Keep Driving Until Message is Cleared messages Displayed on DIC, DTC P2463 May Be Set. Read More »
This service bulletin provides a diagnostic aid procedure on how to perform a quick test to check if the DPF is the cause of excessive soot from the tailpipe. Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to Service Engine Soon (SES) Lamp illuminated and/or a??Service Emissions ... Read More »
This informational bulletin provides information on Clean Exhaust Filter See Owners Manual Now or Cleaning Exhaust Filter Keep Driving Until Message is Cleared messages Displayed on DIC, DTC P2463 May Be Set. Read More »
ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
This service bulletin provides information on the cold start control system in DI engines to reduce cold start emissions and improve fuel economy. Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards the Service Engine Soon (SES) lamp illuminated and/or Service Emission System ... Read More »
This informational bulletin provides a procedure on how to perform a quick test to check if the DPF is the cause of excessive soot from the tailpipe. Read More »
This service bulletin provides information on the cold start control system in DI engines to reduce cold start emissions and improve fuel economy. Read More »
This informational bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer. Read More »
This Preliminary Information communication provides information to the technician about vehicles that may have a bump feel or clunk noise at a stop or on launch. Read More »
This bulletin provides information on the TOP TIER Detergent Gasoline Licensed Brands and the TOP TIER Diesel Fuel Licensed Brands that are recommended for use in all GM vehicles and the TOP TIER FUELS website URL. Read More »
This service bulletin provides information on the cold start control system in DI engines to reduce cold start emissions and improve fuel economy. Read More »
This Preliminary information communicates to the dealer technician that if a customer comments that their vehicle equipped with a 6L80, 6L90, 8L90, 10L80, or 10L1000 transmission has a harsh shift, shudder, stall or high transmission ... Read More »
This Preliminary information communicates to the dealership technician a change made to the wire harness and reductant control module for the Diesel Exhaust Fluid tank connector. Read More »
This informational bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer. Read More »
This Preliminary information communicates to the dealership technician a change made to the wire harness and reductant control module for the Diesel Exhaust Fluid tank connector. Read More »
This service bulletin provides service information for customer concerns of an in-tank fuel pump whining noise, engine hard to start and/or stalls and Malfunction Indicator Lamp (MIL) is illuminated that may be caused by gelling of fuel ... Read More »
This technical bulletin provides a procedure to flush the cooler lines to validate if there is excessive debris in the fuel system caused by a failed part. Read More »
This bulletin provides information on common diesel engine tick noises and how they are considered part of normal operation and no parts should be replaced for these normal operating conditions. Read More »
This bulletin provides information on the TOP TIER Detergent Gasoline Licensed Brands and the TOP TIER Diesel Fuel Licensed Brands that are recommended for use in all GM vehicles and the TOP TIER FUELS website URL. Read More »
This Preliminary information communicates to the dealer technician that if a customer comments that their vehicle equipped with a 6L80, 6L90, 8L90, 10L80, or 10L1000 transmission has a harsh shift, shudder, stall or high transmission ... Read More »
This Preliminary information communicates to the dealer technician that if a customer comments that their vehicle equipped with a 6L80, 6L90, 8L90, 10L80, or 10L1000 transmission has a harsh shift, shudder or stall concern they should ... Read More »
This technical bulletin provides a procedure to flush the cooler lines to validate if there is excessive debris in the fuel system caused by a failed part. Read More »
This Preliminary information communicates to the dealer technician that if a customer comments that their vehicle equipped with a 6L80, 6L90, 8L90, 10L80, or 10L1000 transmission has a harsh shift, shudder or stall concern they should ... Read More »
This service bulletin provides information to correct a customer concern of an in-tank fuel pump whining noise, engine hard to start and/or stalls and Malfunction Indicator Lamp (MIL) is illuminated. Read More »
This Preliminary Information communication provides information to the technician about vehicles that may have a bump feel or clunk noise at a stop or on launch. Read More »
This service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to correct a customer concern of an MIL Illuminated with DTCs P0442 and/or P0455 Set. Read More »
This informational bulletin advises the technician to not replace the TMAP sensor, clean it using air or harsh chemicals but allow time for the sensor to thaw. Read More »
This technical bulletin provides a procedure to program the Reductant Control Module and Setup and Perform the Reductant Fluid Tank Level Reset. Read More »
This technical bulletin provides a procedure to program the Reductant Control Module and Setup and Perform the Reductant Fluid Tank Level Reset. Read More »
This technical bulletin provides a procedure to program the Reductant Control Module and Setup and Perform the Reductant Fluid Tank Level Reset. Read More »
This informational bulletin provides information on Clean Exhaust Filter See Owner Manual Now or Cleaning Exhaust Filter Keep Driving Until Message is Cleared messages Displayed on DIC, DTC P2463 May Be Set. Read More »
This service bulletin provides service information for customer concerns of an in-tank fuel pump whining noise, engine hard to start and/or stalls and Malfunction Indicator Lamp (MIL) is illuminated that may be caused by gelling of fuel ... Read More »
This technical bulletin provides a procedure to test and replace the high-pressure fuel injector electrical connectors if found the cause of the MIL. Read More »
This technical bulletin provides a procedure to program the Reductant Control Module and Setup and Perform the Reductant Fluid Tank Level Reset. Read More »
This technical bulletin provides a procedure to test and replace the high-pressure fuel injector electrical connectors if found the cause of the MIL. Read More »
This technical bulletin provides a procedure to test and replace the high-pressure fuel injector electrical connectors if found the cause of the MIL. Read More »
This technical bulletin provides a procedure to flush the cooler lines to validate if there is excessive debris in the fuel system caused by a failed part. Read More »
This technical bulletin provides a procedure to flush the cooler lines to validate if there is excessive debris in the fuel system caused by a failed part. Read More »
This bulletin provides information on the TOP TIER Detergent Gasoline Licensed Brands and the TOP TIER Diesel Fuel Licensed Brands that are recommended for use in all GM vehicles and the TOP TIER FUELS website URL. Read More »
This service bulletin provides a diagnostic aid procedure on how to perform a quick test to check if the DPF is the cause of excessive soot from the tailpipe. Read More »
This service bulletin provides service information for customer concerns of an in-tank fuel pump whining noise, engine hard to start and/or stalls and Malfunction Indicator Lamp (MIL) is illuminated that may be caused by gelling of fuel ... Read More »
This informational bulletin provides information on Clean Exhaust Filter See Owners Manual Now or Cleaning Exhaust Filter Keep Driving Until Message is Cleared messages Displayed on DIC, DTC P2463 May Be Set. Read More »
This technical bulletin provides a procedure to flush the cooler lines to validate if there is excessive debris in the fuel system caused by a failed part. Read More »
This technical bulletin provides a procedure to program the Reductant Control Module and Setup and Perform the Reductant Fluid Tank Level Reset. Read More »
This Preliminary information communicates to the dealership technician a change made to the wire harness and reductant control module for the Diesel Exhaust Fluid tank connector. Read More »
This informational bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer. Read More »
This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards Service Emission System and/or DEF Level Low message on driver information center ... Read More »
This Preliminary information communicates to the dealership technician a change made to the wire harness and reductant control module for the Diesel Exhaust Fluid tank connector. Read More »
Service Update. On certain vehicles equipped with a 6.6L diesel engine (RPO L5P), the DEF tank connector may overheat and set the following diagnostic codes (P10D9, P143C and P10F3), which will result in reduced engine speed. Read More »
On certain vehicles equipped with a 6.6L diesel engine (RPO L5P), the DEF tank connector may overheat and set the following diagnostic codes (P10D9, P143C and P10F3), which will result in reduced engine speed. Read More »
This bulletin provides information on common diesel engine tick noises and how they are considered part of normal operation and no parts should be replaced for these normal operating conditions. Read More »
This bulletin provides information on the TOP TIER Detergent Gasoline Licensed Brands and the TOP TIER Diesel Fuel Licensed Brands that are recommended for use in all GM vehicles and the TOP TIER FUELS website URL. Read More »
This technical bulletin provides a procedure to flush the cooler lines to validate if there is excessive debris in the fuel system caused by a failed part. Read More »
This informational bulletin advises the technician on what to do if the DEF pump has been replaced and perform a leak test to prime the pump. Read More »
This bulletin provides information on common diesel engine tick noises and how they are considered part of normal operation and no parts should be replaced for these normal operating conditions. Read More »
This bulletin provides information on the TOP TIER Detergent Gasoline Licensed Brands and the TOP TIER Diesel Fuel Licensed Brands that are recommended for use in all GM vehicles and the TOP TIER FUELS website URL. Read More »
This technical bulletin provides a procedure to flush the cooler lines to validate if there is excessive debris in the fuel system caused by a failed part. Read More »
This informational bulletin advises the technician on what to do if the DEF pump has been replaced and perform a leak test to prime the pump. Read More »
This informational bulletin provides information on availability for a locking gas cap for trucks are operated in high amount of dirt or dust which can migrate to the filler cap area. Read More »
This informational bulletin advises the technician on what to do if the DEF pump has been replaced and perform a leak test to prime the pump. Read More »
This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage. Read More »
This engineering informational bulletin is requesting information from technicians to inspect for engine oil leak and contact the engineer listed. Read More »
This service bulletin advises the technician to check if the transmission cooler lines are twisted to correct customer concerns of Harsh Shift, Shudder, Surge, Stall, Transmission Overheating and/or High Transmission Fluid Temperature. Read More »
This service bulletin helps diagnose/reduce possible CCND issues on Transfer Cases - Service 4WD on DIC, Intermittent Failures, Noise Concerns, Driveline/Steering Vibration/Shudder, Intermittent DTCs/MIL Illuminated, ... Read More »
This Warranty Admin service bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and explains the PQC process, GWM Transaction submission, ... Read More »
This Preliminary information communicates that the tool for the HD transfer cases to install the input seal during a repair is incorrect and a new tool is in development. Read More »
This service bulletin provides a Diagnostic Tip for Noise, Vibration, and/or Harshness Issues/Clunk Noise Heard During Coast Down Event after the transfer case was removed from the transmission and reinstalled during a recent repair. Read More »
This service bulletin helps diagnose/reduce possible CCND issues on Transfer Cases - Service 4WD on DIC, Intermittent Failures, Noise Concerns, Driveline/Steering Vibration/Shudder, Intermittent DTCs/MIL Illuminated, ... Read More »
This Preliminary information communicates a diagnostic tip for the 110 /120 volt power outlets being inoperative and dealerships should try a battery disconnect to see if the concern goes away. Read More »
This service bulletin provides a vibration analysis worksheet the technician can use in conjunction with the appropriate Vibration Analysis-Road testing procedure when diagnosing vibration concerns. Read More »
This service bulletin helps diagnose/reduce possible CCND issues on Transfer Cases - Service 4WD on DIC, Intermittent Failures, Noise Concerns, Driveline/Steering Vibration/Shudder, Intermittent DTCs/MIL Illuminated, ... Read More »
This information bulletin advises the technician the difference between a welch cap leak and the output seal of the t-case or transmission leaking ATF, causing the customer concern of a Red Fluid Leak from Center of Vehicle Located by ... Read More »
This service bulletin provides repair information to correct customer concerns of Rear Wheel Lock Up, ABS Event, Loud Bang and a Flashing a??Da?? on Driver Information Center (DIC) when Lightly or Moderately Accelerating Forcing an 8-7 or ... Read More »
This service bulletin provides a Diagnostic Tip for Noise, Vibration, and/or Harshness Issues/Clunk Noise Heard During Coast Down Event after the transfer case was removed from the transmission and reinstalled during a recent repair. Read More »
The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the customer that it is normal for the delay. Read More »
This informational bulletin advises the tech to inspect the transfer case motor electrical connectors for possible damage or corrosion that might be caused by a damage grommet inside the electrical connector. Read More »
This service bulletin advises the technician to check if the transmission cooler lines are twisted to correct customer concerns of Harsh Shift, Shudder, Surge, Stall, Transmission Overheating and/or High Transmission Fluid Temperature. Read More »
This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage. Read More »
This Preliminary information communicates that the t-case input seal, and/or the o-ring most likely is the source of the leak between the transmission and the t-case. Read More »
This service bulletin provides information to dealership personnel on automatic transmission shift and engine driveability concerns and/or MIL ON due to aftermarket oil bath air filter use. Read More »
This Preliminary information communicates that the t-case input seal, and/or the o-ring most likely is the source of the leak between the transmission and the t-case. Read More »
This service bulletin provides information on some vehicles that may rock or move slightly forward or rearward while in Park at start up after cold soak. This condition may be accompanied by a clunk noise. Read More »
This Preliminary information communicates information on a hydrauilc rush type noise from the power steering gear. This noise is a characteristic of the new Active Hydraulic Assist System RPO NV8 and no repairs should be made. Read More »
This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Read More »
This preliminary informational (PI) bulletin provides information to dealership personnel which may be helpful when addressing underbody component corrosion with customers. Read More »
This technical bulletin provides repair information to correct a customer concern of Service 4a??Wheel Drive Message Illuminated in DIC with DTC C15AC Set. Read More »
This technical bulletin provides repair information to correct a customer concern of Service 4a??Wheel Drive Message Illuminated in DIC with DTC C119E Set During Antilock Brake System Event. Read More »
This service bulletin provides information for the technician that may experience a condition when after performing a DTC Clear/Reset on the TCM during diagnosis or after completion of a transmission repair or replacement, the DTCs did ... Read More »
This service bulletin provides information for after installation of a replacement upper valve body, the transmission may have no Reverse and no 2nd gear. Read More »
This service bulletin provides information for the technician that may experience a condition when after performing a DTC Clear/Reset on the TCM during diagnosis or after completion of a transmission repair or replacement, the DTCs did ... Read More »
This informational bulletin advises the tech to inspect the transfer case motor electrical connectors for possible damage or corrosion that might be caused by a damage grommet inside the electrical connector. Read More »
This service bulletin provides information for the technician that may experience a condition when after performing a DTC Clear/Reset on the TCM during diagnosis or after completion of a transmission repair or replacement, the DTCs did ... Read More »
This service bulletin provides a diagnostic procedure to aid in correcting a customer concern of a Howling, Whining/Whirring Noise, Shudder/Vibration and/or Grinding Noise While in 4HI, 4HI Auto and/or During Parking Lot Maneuvers in Auto ... Read More »
This Warranty Admin service bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and explains the PQC process, GWM Transaction submission, ... Read More »
This service bulletin provides a diagnostic procedure to aid in correcting a customer concern of a Howling, Whining/Whirring Noise, Shudder/Vibration and/or Grinding Noise While in 4HI, 4HI Auto and/or During Parking Lot Maneuvers in Auto ... Read More »
This bulletin provides information on Policies Applicable to All U.S. Dealers for Engine and Transmission Assembly Replacement Under Warranty, Policy or Customer Enthusiasm and information on Submission of Warranty Transaction in Global ... Read More »
This service bulletin provides a Diagnostic Tip for Noise, Vibration, and/or Harshness Issues/Clunk Noise Heard During Coast Down Event after the transfer case was removed from the transmission and reinstalled during a recent repair. Read More »
This information advises the technician the difference between a welch cap leak and the output seal of the t-case or transmission leaking ATF causing the customers concern. Read More »
This Preliminary information communicates to the dealer technician that if the vehicle's engine coolant reservoir has transmission fluid in it or if Glycol it found in the transmission fluid the dealer should replace the Automatic ... Read More »
This Preliminary Information communication provides information to the technician about vehicles that may have a delayed engagement into drive, shudder at a launch, or the transmission is slipping when shifting into 1st, 2nd, 3rd or 4th ... Read More »
This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage. Read More »
This Preliminary information communicates to the dealer technician that TAC recommends the utilization of the GDS2 software to aid in diagnosing automatic transmission concerns. Read More »
This diagnostic tip advises the tech not to separate the flexplate from the torque convertor or damage my occur if the engine is started while diagnosing for noise from the engine or transmission. Read More »
This service bulletin provides repair information to correct customer concerns of Rear Wheel Lock Up, ABS Event, Loud Bang and a Flashing a??Da?? on Driver Information Center (DIC) when Lightly or Moderately Accelerating Forcing an 8-7 or ... Read More »
This informational bulletin advises the technician to replace the TBV if the transmission has any type of repair even if no problem was found, to replace the tbv. Read More »
This Preliminary information communicates to the dealer technician that if a customer comments that their vehicle equipped with a 6L80, 6L90, 8L90, 10L80, or 10L1000 transmission has a harsh shift, shudder, stall or high transmission ... Read More »
This informational bulletin advises the technician to replace the TBV if the transmission has any type of repair even if no problem was found, to replace the tbv. Read More »
This Preliminary information communicates an issue with the power assist steps having erratic operation and not staying deployed. Engineering is working on a fix. Read More »
This Preliminary information communicates to the dealer technician that if a customer comments that their vehicle equipped with a 6L80, 6L90, 8L90, 10L80, or 10L1000 transmission has a harsh shift, shudder, stall or high transmission ... Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to Service Engine Soon (SES) Lamp illuminated and/or a??Service Emissions ... Read More »
This service bulletin provides repair information to correct customer concerns of Rear Wheel Lock Up, ABS Event, Loud Bang and a Flashing a??Da?? on Driver Information Center (DIC) when Lightly or Moderately Accelerating Forcing an 8-7 or ... Read More »
This Preliminary information communicates diagnostics to the dealer involving a vehicle shudder concern caused by the camshaft actuator system that can be mistaken for a transmission issue. Read More »
This technical bulletin provides repair information to correct a customer concern of Service 4WD Message illuminated on Driver Information Center (DIC), DTCs C118D, C119B and/or C119C set. Read More »
This Preliminary information communicates to the dealer technician that if the vehicle's engine coolant reservoir has transmission fluid in it or if Glycol it found in the transmission fluid the dealer should replace the Automatic ... Read More »
This Preliminary information communicates to the dealer a condition with the throttle body that may illuminate the service engine soon light, cause the engine to run rough and/or display reduced engine power message. Read More »
This preliminary information bulletin instructs to technicians to check the trigger wheel for interfering with the timing chain, and adding a shim to the camshaft position sensor. Read More »
This Preliminary information communicates to the dealer technician that if a customer comments that their vehicle equipped with a 6L80, 6L90, 8L90, 10L80, or 10L1000 transmission has a harsh shift, shudder, stall or high transmission ... Read More »
This Preliminary information communicates to the dealer technician that it is a normal characteristic for vehicles equipped with the 10L1000 transmission to start off in second gear in normal driving mode. Read More »
This Preliminary information communicates to the dealer technician that if a customer comments that their vehicle equipped with a 6L80, 6L90, 8L90, 10L80, or 10L1000 transmission has a harsh shift, shudder or stall concern they should ... Read More »
This Warranty Admin service bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and explains the PQC process, GWM Transaction submission, ... Read More »
This informational bulletin advises the technician to verify the TCM is asleep before trying to repair the transmission in order for all the codes to be re-set. Read More »
This service bulletin provides repair information to correct a customer concern of Possible Crank No Start or Extended Crank with DTC P12A6. Read More »
This Preliminary information communicates to the dealer technician that if a customer comments that their vehicle equipped with a 6L80, 6L90, 8L90, 10L80, or 10L1000 transmission has a harsh shift, shudder or stall concern they should ... Read More »
This bulletin provides information on Policies Applicable to All U.S. Dealers for Engine and Transmission Assembly Replacement Under Warranty, Policy or Customer Enthusiasm and information on Submission of Warranty Transaction in Global ... Read More »
This Preliminary information communicates information on a hydrauilc rush type noise from the power steering gear. This noise is a characteristic of the new Active Hydraulic Assist System RPO NV8 and no repairs should be made. Read More »
This Preliminary information communicates Possible Crank no start or extended crank with DTC p12A6 set current or history. Under Investigation Read More »
This informational bulletin provides information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts, Slips, or Flares. Read More »
This informational bulletin provides information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts, Slips, or Flares. Read More »
This informational bulletin provides information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts, Slips, or Flares. Read More »
This technical bulletin provides a procedure to replace the 4 5 6 clutch housing if the bushing was found worn and the cause of the customers concern. Read More »
This Preliminary information communicates that the tool for the HD transfer cases to install the input seal during a repair is incorrect and a new tool is in development. Read More »
The intent of this technical bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them. Read More »
This informational bulletin explains possible normal condition of a flare from 1st to 2nd, even if the trans had been repaired for the flare and its still noticed. Read More »
POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
This Preliminary information communicates to the dealer technician that TAC recommends the utilization of the GDS2 software to aid in diagnosing automatic transmission concerns. Read More »
POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT
This Preliminary information communicates that the t-case input seal, and/or the o-ring most likely is the source of the leak between the transmission and the t-case. Read More »
This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage. Read More »
POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT:VALVES/VALVE BODY
This service bulletin provides information for after installation of a replacement upper valve body, the transmission may have no Reverse and no 2nd gear. Read More »
POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT:FILTER/SCREEN
This Preliminary information communication provides information to the technician on installing Regular Production Option Code 9L7 Up-fitter Auxiliary Switches. Read More »
This Preliminary information communicates that the tool for the HD transfer cases to install the input seal during a repair is incorrect and a new tool is in development. Read More »
This service bulletin provides a diagnostic procedure to aid in correcting a customer concern of a Howling, Whining/Whirring Noise, Shudder/Vibration and/or Grinding Noise While in 4HI, 4HI Auto and/or During Parking Lot Maneuvers in Auto ... Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the Service Engine Soon Lamp illuminated on Driver Information Center. Read More »
This service bulletin provides information on the Transport Mode Feature, also known as Logistics mode, which is used to increase the 12V Battery stand time of the vehicle during transit and or long period of stand time at the dealerships. Read More »
This informational bulletin advises the technician to check for faults that may be caused by the trailer otherwise found by a possible faulty trailer connector. Read More »
This Preliminary information communicates that some customers may comment that after an auto-stop event the engine does not restart and to inspect the engine ground strap. Temporarily on hold while PIE0572 is active. Read More »
This service bulletin helps diagnose/reduce possible CCND issues on Transfer Cases - Service 4WD on DIC, Intermittent Failures, Noise Concerns, Driveline/Steering Vibration/Shudder, Intermittent DTCs/MIL Illuminated, ... Read More »
This service bulletin provides a repair procedure to correct customer concerns of Service Emissions System Displayed on DIC, MIL Illuminated with DTC P249C and/or P20E8 Set. Read More »
This technical bulletin provides a procedure to program the Reductant Control Module and Setup and Perform the Reductant Fluid Tank Level Reset. Read More »
This Preliminary information communication provides information to the technician on installing Regular Production Option Code 9L7 Up-fitter Auxiliary Switches. Read More »
This service bulletin assists technicians in setting up PicoScope hardware/software to monitor CAN bus traffic (voltage patterns) to aid Technical Assistance (TAC) and Field Service Engineers (FSEs) in diagnosing electrical issues present ... Read More »
This technical bulletin provides repair information to correct a customer concern of 2020 - 2022 Silverado and Sierra Equipped with Diesel Engine Setting DTCs P20BB or P20C3. Read More »
This informational bulletin advises the technician to check for faults that may be caused by the trailer otherwise found by a possible faulty trailer connector. Read More »
This Preliminary information communicates diagnostic tips when trying to root cause a SES MIL with DTC's B2B0D and B2B0E. Main cause is aftermarket electrical devices spliced into the ignition main fuses. Read More »
This preliminary information (PI) provides information om Service Programming System (SPS) Error Codes (E4398, E4399, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491 or E6961). Read More »
This technical bulletin provides a procedure to program the Reductant Control Module and Setup and Perform the Reductant Fluid Tank Level Reset. Read More »
This service bulletin helps diagnose/reduce possible CCND issues on Transfer Cases - Service 4WD on DIC, Intermittent Failures, Noise Concerns, Driveline/Steering Vibration/Shudder, Intermittent DTCs/MIL Illuminated, ... Read More »
This technical bulletin provides a procedure to program the Reductant Control Module and Setup and Perform the Reductant Fluid Tank Level Reset. Read More »
This Preliminary Information communication provides information to the technician about vehicles that are found to have a back-up alarm inoperative during the Pre-Delivery Inspection. Read More »
This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content. Read More »
This service bulletin assists technicians in setting up PicoScope hardware/software to monitor CAN bus traffic (voltage patterns) to aid Technical Assistance (TAC) and Field Service Engineers (FSEs) in diagnosing electrical issues present ... Read More »
This service bulletin helps diagnose/reduce possible CCND issues on Transfer Cases - Service 4WD on DIC, Intermittent Failures, Noise Concerns, Driveline/Steering Vibration/Shudder, Intermittent DTCs/MIL Illuminated, ... Read More »
This technical bulletin provides a procedure to program the Reductant Control Module and Setup and Perform the Reductant Fluid Tank Level Reset. Read More »
This informational bulletin advises the tech to inspect the transfer case motor electrical connectors for possible damage or corrosion that might be caused by a damage grommet inside the electrical connector. Read More »
This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations. Read More »
This service bulletin provides service information for customer concerns of an in-tank fuel pump whining noise, engine hard to start and/or stalls and Malfunction Indicator Lamp (MIL) is illuminated that may be caused by gelling of fuel ... Read More »
This service bulletin advises the technician of a different tire/rim option that can be used to correct a customer concern of poor ride quality at highway speeds. Read More »
This technical bulletin provides a procedure to test and replace the high-pressure fuel injector electrical connectors if found the cause of the MIL. Read More »
This service bulletin provides technicians with information on available BCM calibrations to restore bulb outage detection on vehicles produced by a second stage manufacturer (Upfitter), and/or turn signals flash fast after factory box ... Read More »
This service bulletin provides information on the Transport Mode Feature, also known as Logistics mode, which is used to increase the 12V Battery stand time of the vehicle during transit and or long period of stand time at the dealerships. Read More »
The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them. Read More »
This technical bulletin provides a procedure to replace the air bag and air bag harness to correct a condition of Airbag Malfunction Warning and Airbag Malfunction Indicator Illuminated with DTC B0001-1B due to corrosion. Read More »
This service bulletin provides repair information to correct a customer concern of Rear View Camera Issues - DTCs B395A, B395B, B395C, B101E, B101D. Read More »
This technical bulletin provides a procedure to program the Reductant Control Module and Setup and Perform the Reductant Fluid Tank Level Reset. Read More »
This Preliminary Information communication provides information to the technician on how to diagnose and repair vehicle that may have a "Check Trailer Wiring" or "Service Trailer Brake System? message on the Driver Information Center when ... Read More »
This technical bulletin provides a procedure to test and replace the high-pressure fuel injector electrical connectors if found the cause of the MIL. Read More »
This service bulletin provides radio software version 135120 (IOR) update procedures to correct customer concerns of software related issues. Read More »
This technical bulletin provides repair information to correct a customer concern of seeing the trailer running lights shut off due to excessive load on the running lamp circuit. Read More »
This technical bulletin provides repair information to correct a customer concern of Trailer Tire Pressure Only Reading Up To 100 PSI, New Parts To Increase To 147 PSI. Read More »
This service bulletin provides information on the Transport Mode Feature, also known as Logistics mode, which is used to increase the 12V Battery stand time of the vehicle during transit and or long period of stand time at the dealerships. Read More »
This technical bulletin provides a procedure to test and replace the high-pressure fuel injector electrical connectors if found the cause of the MIL. Read More »
This service bulletin provides repair information to correct a customer concern of Rear View Camera Coaxial Related Issues - DTCs B395A, B395B, B395C, B101E, B101D. Read More »
This technical bulletin provides repair information to correct a customer concern of Service 4a??Wheel Drive Message Illuminated in DIC with DTC C15AC Set. Read More »
This technical bulletin provides repair information to correct a customer concern of Service 4a??Wheel Drive Message Illuminated in DIC with DTC C119E Set During Antilock Brake System Event. Read More »
This technical bulletin provides repair information to correct a customer concern of Volume Selection Does Not Clear from DIC After Adjusting Volume. Read More »
This informational bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer. Read More »
This technical bulletin provides a procedure to program the Reductant Control Module and Setup and Perform the Reductant Fluid Tank Level Reset. Read More »
This service bulletin provides information for the technician that may experience a condition when after performing a DTC Clear/Reset on the TCM during diagnosis or after completion of a transmission repair or replacement, the DTCs did ... Read More »
This technical bulletin provides a procedure to program the Reductant Control Module and Setup and Perform the Reductant Fluid Tank Level Reset. Read More »
This service bulletin provides information for the technician that may experience a condition when after performing a DTC Clear/Reset on the TCM during diagnosis or after completion of a transmission repair or replacement, the DTCs did ... Read More »
This technical bulletin provides repair information to correct a customer concern of Unable to Dismiss Turn By Turn Directions from the DIC. Read More »
This Preliminary information communicates to the dealer technicians a warm engine knock noise has no short or long term effects on the engine. Do not attempt repairs for this noise. Read More »
This service bulletin provides information for U.S. dealers ONLY to refer to the Battery Maintenance Report to identify vehicles in dealer inventory that require attention. Read More »
This informational bulletin advises the tech to inspect the transfer case motor electrical connectors for possible damage or corrosion that might be caused by a damage grommet inside the electrical connector. Read More »
This Preliminary Information communication provides information to the technician about vehicles that are found to have a back-up alarm inoperative during the Pre-Delivery Inspection. Read More »
This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content. Read More »
This Preliminary information communicates diagnostic tips when trying to root cause a SES MIL with DTC's B2B0D and B2B0E. Main cause is aftermarket electrical devices spliced into the ignition main fuses. Read More »
This service bulletin provides information for the technician that may experience a condition when after performing a DTC Clear/Reset on the TCM during diagnosis or after completion of a transmission repair or replacement, the DTCs did ... Read More »
This service bulletin provides information for U.S. dealers ONLY to refer to the Battery Maintenance Report to identify vehicles in dealer inventory that require attention. Read More »
This service bulletin provides diagnostic/repair information to correct a customer concern of Cellphone not Charging or USB Receptacle Inoperative. Read More »
This service bulletin provides radio software version 135120 (IOR) update procedures to correct customer concerns of software related issues. Read More »
This service bulletin provides repair information on release of Radio Software Version V160 Update to correct customer concerns of radio software issues. Read More »
This service bulletin provides radio software version 135120 (IOR) update procedures to correct customer concerns of software related issues. Read More »
This preliminary information (PI) provides information om Service Programming System (SPS) Error Codes (E4398, E4399, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491 or E6961). Read More »
The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them. Read More »
This warranty administration bulletin provides policy information requirements applicable to key fob replacement under the New Vehicle Limited Warranty or under a Replacement Parts Warranty on 2017-2022 and newer model year vehicles with ... Read More »
This service bulletin provides repair information to correct a customer concern of Radio System Settings Lost or Returning to Default Values. Read More »
This technical bulletin provides a procedure to install 2 way tape to correct a condition of Trailering Connector Loose Within Rear Bumper. Read More »
This service bulletin provides information for U.S. dealers ONLY to refer to the Battery Maintenance Report to identify vehicles in dealer inventory that require attention. Read More »
This informational bulletin advises the technician to check for faults that may be caused by the trailer other wise found by a possible faulty trailer connector. Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to Service Engine Soon (SES) Lamp illuminated and/or a??Service Emissions ... Read More »
This Preliminary information communicates to the dealership technician a change made to the wire harness and reductant control module for the Diesel Exhaust Fluid tank connector. Read More »
This service bulletin provides information for U.S. dealers ONLY to refer to the Battery Maintenance Report to identify vehicles in dealer inventory that require attention. Read More »
This technical bulletin provides repair information to correct a customer concern of Diagnostic Tips For Park Assist Off Message / Unwanted Or False Park Assist Alerts / No DTCs. Read More »
This Preliminary Information communication provides information to the technician about a no start or another concern after swapping an Engine Control Module or other modules from one vehicle to another. Read More »
This technical bulletin provides repair information to correct a customer concern of Service 4WD Message illuminated on Driver Information Center (DIC), DTCs C118D, C119B and/or C119C set. Read More »
This Preliminary information communicates to the dealership technician a change made to the wire harness and reductant control module for the Diesel Exhaust Fluid tank connector. Read More »
This technical bulletin provides repair information to correct a customer concern of Service Front Camera Message on the Driver Information Center (DIC). Read More »
This Preliminary information communicates to the dealership technician a change made to the wire harness and reductant control module for the Diesel Exhaust Fluid tank connector. Read More »
This Preliminary information communicates to the dealer technicians a warm engine knock noise has no short or long term effects on the engine. Do not attempt repairs for this noise. Read More »
On certain vehicles equipped with a 6.6L diesel engine (RPO L5P), the DEF tank connector may overheat and set the following diagnostic codes (P10D9, P143C and P10F3), which will result in reduced engine speed. Read More »
This Preliminary Information communication provides information to the technician about vehicles that are found to have a back-up alarm inoperative during the Pre-Delivery Inspection. Read More »
This Preliminary information communication provides information to the technician on installing Regular Production Option Code UVC Rearview Camera. Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards the Articulated Running Board (ARB). Read More »
This Preliminary information communicates diagnostic tips when trying to root cause a SES MIL with DTC's B2B0D and B2B0E. Main cause is aftermarket electrical devices spliced into the ignition main fuses. Read More »
This Preliminary Information communication provides information to the technician on how to diagnose and repair vehicle that may have a "Check Trailer Wiring" or "Service Trailer Brake System? message on the Driver Information Center when ... Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards the Service Engine Soon (SES) lamp illuminated and/or Service Emission System ... Read More »
This service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to correct a customer concern of an MIL Illuminated with DTCs P0442 and/or P0455 Set. Read More »
This service bulletin provides repair information to correct a customer concern of Possible Crank No Start or Extended Crank with DTC P12A6. Read More »
This technical bulletin provides a procedure to flush the cooler lines to validate if there is excessive debris in the fuel system caused by a failed part. Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the Service Engine Soon Lamp illuminated on Driver Information Center. Read More »
This service bulletin provides information on the cold start control system in DI engines to reduce cold start emissions and improve fuel economy. Read More »
This service bulletin provides technicians with information on available BCM calibrations to restore bulb outage detection on vehicles produced by a second stage manufacturer (Upfitter), and/or turn signals flash fast after factory box ... Read More »
This Preliminary information communicates to dealership technicians that a P11D5 may be cause by a software anomaly, check to see if campaign N212331790 applies, reflash the ECM and release the vehicle. Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the Service Engine Soon Lamp illuminated on Driver Information Center. Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to a Dead Battery and/or Shift to Park Lamp Illuminated On Driver Information ... Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the airbag lamp illuminated on the driver?s information center (DIC). Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the airbag lamp illuminated on the driver?s information center (DIC). Read More »
This Preliminary Information communication provides information to the technician about vehicles that are found to have a back-up alarm inoperative during the Pre-Delivery Inspection. Read More »
This Preliminary Information communication provides information to the technician about vehicles that are found to have a back-up alarm inoperative during the Pre-Delivery Inspection. Read More »
This engineering information (EI) is requesting information from technicians to provided the engineers listed in regards to No Trailer Lights, No Brake Lights and/or Trailer Tow Receptacle is Loose. Read More »
GSA Example: This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the service 4WD message illuminated on the drivers ... Read More »
GSA Example: This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the service 4WD message illuminated on the drivers ... Read More »
This Preliminary information communicates to the dealer technicians a warm engine knock noise has no short or long term effects on the engine. Do not attempt repairs for this noise. Read More »
This informational bulletin advises the technician to not replace the TMAP sensor, clean it using air or harsh chemicals but allow time for the sensor to thaw. Read More »
The intent of this technical bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them. Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards an intermittent no start. Read More »
This bulletin provides information on the Transport Mode On Message Being Displayed in the Driver Information Center (DIC) and/or Battery Light is Flashing and the procedures to turn the Transport Mode message ON and OFF. Read More »
This bulletin provides information on the Transport Mode On Message Being Displayed in the Driver Information Center (DIC) and/or Battery Light is Flashing and the procedures to turn the Transport Mode message ON and OFF. Read More »
This Preliminary information communicates Possible Crank no start or extended crank with DTC p12A6 set current or history. Under Investigation Read More »
This Preliminary information communicates a GM part number for reflective high temperature heat or insulating tape when repairing wiring harnesses. Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards check to the engine lamp being illuminated on the drivers information center ... Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards an intermittent no start. Read More »
This Preliminary information communicates to the dealership technician a change made to the wire harness and reductant control module for the Diesel Exhaust Fluid tank connector. Read More »
ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL
This Preliminary Information communication provides information to the technician about customers that may request the factory Integrated Trailer Brake Controller Regular Production Option Code (JL1) be installed on their Full-Size Pickup ... Read More »
This Preliminary Information communication provides information to the technician about customers that may request the factory Integrated Trailer Brake Controller Regular Production Option Code (JL1) be installed on their Full-Size Pickup ... Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards the trailer brake being inoperative and/or check trailer brakes message on ... Read More »
ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS
This service bulletin provides technicians with information on available BCM calibrations to restore bulb outage detection on vehicles produced by a second stage manufacturer (Upfitter), and/or turn signals flash fast after factory box ... Read More »
This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Read More »
This warranty administration bulletin provides policy information requirements applicable to key fob replacement under the New Vehicle Limited Warranty or under a Replacement Parts Warranty on 2021 and newer model year vehicles with RPO ... Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the trailer light message and/or trailer disconnect message on the ... Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards the Service Engine Soon (SES) lamp illuminated and/or Service Emission System ... Read More »
ELECTRICAL SYSTEM:INSTRUMENT PANEL:FUEL GAUGE:FUEL LEVEL FLOAT/SENSOR/SENDING UNIT
This technical bulletin provides a procedure This technical bulletin provides repair information to correct a customer concern of Unable to Set PIN to Enable Teen Driver Feature. Read More »
This Preliminary Information communication provides information to the technician that General Motors Technical Assistance Center may ask for Global Diagnostic System 2 Session Log. Read More »
This Preliminary Information communication provides information to the technician that General Motors Technical Assistance Center may ask for Global Diagnostic System 2 Session Log. Read More »
This technical bulletin provides repair information to correct a customer concern of Service Front Camera Message on the Driver Information Center (DIC). Read More »
Service Update. On certain vehicles equipped with a 6.6L diesel engine (RPO L5P), the DEF tank connector may overheat and set the following diagnostic codes (P10D9, P143C and P10F3), which will result in reduced engine speed. Read More »
This technical bulletin provides repair information to correct a customer concern of Clean Exhaust Filter, Perform Manual Regen, and Loss of Digital Speedometer DIC Displays. Read More »
This informational bulletin provides information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts, Slips, or Flares. Read More »
This Preliminary information communicates information on how to disable the Side Blind Zone Detection and Park Assist systems when a customer removes the pickup box from the vehicle to install an aftermarket bed or body. Read More »
This Preliminary information communicates that the tool for the HD transfer cases to install the input seal during a repair is incorrect and a new tool is in development. Read More »
This Preliminary information communicates information on how to disable the Side Blind Zone Detection and Park Assist systems when a customer removes the pickup box from the vehicle to install an aftermarket bed or body. Read More »
This Preliminary information communicates information on how to disable the Side Blind Zone Detection and Park Assist systems when a customer removes the pickup box from the vehicle to install an aftermarket bed or body. Read More »
This Preliminary information communicates information on how to disable the Side Blind Zone Detection and Park Assist systems when a customer removes the pickup box from the vehicle to install an aftermarket bed or body. Read More »
This Preliminary information communicates and issue with the park assist off message or unwanted/false parking assist alerts and provide diagnostics tip for dealership to inspect the parking assist sensor/bezel mounting in the front and ... Read More »
This service bulletin provides information for dealers/technicians on Stone Chip/Membrane Damage, Broken Connector and/or Sensor Retaining Tabs, and/or Paint Damage of Park Assist Sensors. Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to their vehicle having sudden loss of propulsion. Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to their vehicle having sudden loss of propulsion. Read More »
ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY:MANAGEMENT SYSTEM/ENERGY CONTROL MODULE (BMS/BECM)
This technical bulletin provides repair information to correct a customer concern of MIL Illuminated- ECM Update for P026C, P20EE, or P11D5. Read More »
This Preliminary information provides information to the technician on installing a roof beacon light. Technician will need to reference the latest version of General Motors Up-fitter Integration Bulletin 157. Read More »
This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content. Read More »
This service bulletin provides technicians with information on available BCM calibrations to restore bulb outage detection on vehicles produced by a second stage manufacturer (Upfitter), and/or turn signals flash fast after factory box ... Read More »
This technical bulletin provides repair information to correct a customer concern of seeing the trailer running lights shut off due to excessive load on the running lamp circuit. Read More »
This service bulletin provides information for dealers/technicians on Exterior Lamp Condensation and Water Leaks and Replacement Guidelines. Read More »
This service bulletin provides technicians with information on available BCM calibrations to restore bulb outage detection on vehicles produced by a second stage manufacturer (Upfitter), and/or turn signals flash fast after factory box ... Read More »
This service bulletin provides service information for customer concerns of an in-tank fuel pump whining noise, engine hard to start and/or stalls and Malfunction Indicator Lamp (MIL) is illuminated that may be caused by gelling of fuel ... Read More »
This service bulletin provides information for dealers/technicians on Exterior Lamp Condensation and Water Leaks and Replacement Guidelines. Read More »
This engineering information (EI) is requesting information from technicians to provided the engineers listed in regards to No Trailer Lights, No Brake Lights and/or Trailer Tow Receptacle is Loose. Read More »
This engineering information (EI) is requesting information from technicians to provided the engineers listed in regards to No Trailer Lights, No Brake Lights and/or Trailer Tow Receptacle is Loose. Read More »
This Preliminary information communicates an issue where GM Accessory Illuminated Emblem may cause an issue with the left headlight/turn signal and dealership are to disable the Accessory Illuminated Emblem until a fix is available. Read More »
This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards on a turn signal not canceling and/or mis-canceling. Read More »
This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards on a turn signal not canceling and/or mis-canceling. Read More »
This informational bulletin provides information on Outside Rear View Mirror Defog or Defrost Times Different for Passenger and Driver Mirrors. Read More »
This Preliminary information communicates information on how to disable the Side Blind Zone Detection and Park Assist systems when a customer removes the pickup box from the vehicle to install an aftermarket bed or body. Read More »
This technical bulletin provides repair information to correct a customer concern of the foam strip between the I/P trim and base of the windshield detaching from the upper I/P trim panel. Read More »
This Preliminary Information communication advises the technician the steps on diagnosing the concern. Customer's sunroof operation intermittent, bind, noise, auto-reverse, and/or water leaks. Read More »
This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Read More »
This Preliminary information communicates an issues will low or poor heater performance on the drivers side. Dealers are to inspect the HVAC temperature door linkage and if ok replace the heater core. Read More »
This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Read More »
This Preliminary information communicates to the technician the need to inspect the induction system for potential icing issues in very cold ambient temperatures. Read More »
This technical bulletin provides a procedure to replace the air bag and air bag harness to correct a condition of Airbag Malfunction Warning and Airbag Malfunction Indicator Illuminated with DTC B0001-1B due to corrosion. Read More »
This Preliminary information communicates to the dealer technician that engineering is aware of a concern with the teen driver feature not operating. Read More »
This Preliminary information communicates to dealership how to test properly trailer light option on the truck and also provide additional information on trailer issues. Read More »
This technical bulletin provides a procedure to replace the air bag and air bag harness to correct a condition of Airbag Malfunction Warning and Airbag Malfunction Indicator Illuminated with DTC B0001-1B due to corrosion. Read More »
This technical bulletin provides a procedure to replace the air bag and air bag harness to correct a condition of Airbag Malfunction Warning and Airbag Malfunction Indicator Illuminated with DTC B0001-1B due to corrosion. Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the airbag lamp illuminated on the driver?s information center (DIC). Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the airbag lamp illuminated on the driver?s information center (DIC). Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the airbag lamp illuminated on the driver?s information center (DIC). Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the airbag lamp illuminated on the driver?s information center (DIC). Read More »
This preliminary informational bulletin provides frame coating repair information to correct a customer concern of wax coating on frame peeling, metal shows corrosion/rusting (U.S. and Canada Only). Read More »
This preliminary informational bulletin provides frame coating repair information to correct a customer concern of wax coating on frame peeling, metal shows corrosion/rusting (U.S. and Canada Only). Read More »
This preliminary informational bulletin provides frame coating repair information to correct a customer concern of wax coating on frame peeling, metal shows corrosion/rusting (U.S. and Canada Only). Read More »
This preliminary informational (PI) bulletin provides information to dealership personnel which may be helpful when addressing underbody component corrosion with customers. Read More »
This technical bulletin provides repair information to correct a customer concern of the foam strip between the I/P trim and base of the windshield detaching from the upper I/P trim panel. Read More »
This technical bulletin provides repair information to correct a customer concern of the foam strip between the I/P trim and base of the windshield detaching from the upper I/P trim panel. Read More »
This preliminary informational (PI) bulletin provides information to dealership personnel which may be helpful when addressing underbody component corrosion with customers. Read More »
This service bulletin provides information for the Global Warranty Management (GWM) Warranty Parts Center (WPC) Part Photo Return Process (U.S. Dealers Only). Read More »
This technical bulletin provides repair information to correct a customer concern of the foam strip between the I/P trim and base of the windshield detaching from the upper I/P trim panel. Read More »
This preliminary informational bulletin provides frame coating repair information to correct a customer concern of wax coating on frame peeling, metal shows corrosion/rusting (U.S. and Canada Only). Read More »
This Warranty Administration bulletin provides information on the Global Warranty Management (GWM) Warranty Parts Center (WPC) Parts Return Program. Read More »
This preliminary informational (PI) bulletin provides information to dealership personnel which may be helpful when addressing underbody component corrosion with customers. Read More »
This technical bulletin provides repair information to correct a customer concern of Diagnostic Tips For Park Assist Off Message / Unwanted Or False Park Assist Alerts / No DTCs. Read More »
This informational bulletin provides technicians and dealership personnel with spray-in bed liner general information and repair procedures. Read More »
This preliminary informational bulletin provides information on Damaged, Disassembled or Improperly Packaged Turbochargers Returned to Warranty Part Center. Read More »
This technical bulletin provides a procedure to replace the lower seat frame to correct the condition of Pop Noise Heard During Seat Travel and/or Inadequate Seat Rearward Travel due to a supplier installation error. Read More »
This preliminary informational bulletin provides frame coating repair information to correct a customer concern of wax coating on frame peeling, metal shows corrosion/rusting (U.S. and Canada Only). Read More »
This service bulletin provides information for dealers/technicians on accessory all-weather floor liners and flat mats warped or misshapen. Read More »
This Preliminary information communicates the need for proper documentation when submitting a Field Product Report on paint issues with the new HD Silverado and Sierra. Read More »
This preliminary informational (PI) bulletin provides information to dealership personnel which may be helpful when addressing underbody component corrosion with customers. Read More »
This Warranty Administration bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA) (US dealers only). Read More »
This Preliminary information communicates an issue where the minor tailgate will not open due to an aftermarket device installed on the vehicle. Read More »
This Preliminary information communicates that it is normal for the tailgate to drop faster than it used to after the GM Accessory Kicker Audio System is installed. Read More »
Customer Satisfaction Program. As a remedy for Safety Recall N232426400, certain vehicles had the liftgate exterior release switch assembly disabled. Read More »
Customer Satisfaction Program. As a remedy for Safety Recall N232426400, certain vehicles had the liftgate exterior release switch assembly disabled. Read More »
This Preliminary Information communication provides information to the technician that some owners of Heavy Duty Trucks and Utilities may ask if they can lower their tire pressures. Read More »
This service bulletin advises the technician of a different tire/rim option that can be used to correct a customer concern of poor ride quality at highway speeds. Read More »
This service bulletin provides information for accurate tire pressures that ensure the safe handling and appropriate ride characteristics of GM cars and trucks. Read More »
This Preliminary Information communication provides information to the technician about vehicles with tire sidewall irregularities. This is a visual condition that will not affect durability, reliability or performance of the tires. Read More »
This service bulletin provides information for dealers/technicians on Tire/Wheel Characteristics (Vibration, Balance, Shake, Flat Spotting) of GM Original Equipment Tires. Read More »
This service bulletin provides information for accurate tire pressures that ensure the safe handling and appropriate ride characteristics of GM cars and trucks. Read More »
This bulletin updates the position of General Motors on refinishing aluminum wheels. GM has determined that wheel refinishing under warranty will no longer be performed. Read More »
This service bulletin provides a vibration analysis worksheet the technician can use in conjunction with the appropriate Vibration Analysis-Road testing procedure when diagnosing vibration concerns. Read More »
This service bulletin provides information about the Hunter wheel Road Force balancers that should be utilized for all repairs requiring balance and Road Force measurement. Read More »
This service bulletin advises the technician of a different tire/rim option that can be used to correct a customer concern of poor ride quality at highway speeds. Read More »
This service bulletin provides information for dealers/technicians on Vibration Shortly After Tires are Mounted/Preventing Vibration from Wheel Slip (Tire Sliding on Wheel). Read More »
This service bulletin provides information about the Hunter wheel Road Force balancers that should be utilized for all repairs requiring balance and Road Force measurement. Read More »
This service bulletin provides information for dealers/technicians on Vibration Shortly After Tires are Mounted/Preventing Vibration from Wheel Slip (Tire Sliding on Wheel). Read More »
This technical bulletin provides repair information to correct a customer concern of Trailer Tire Pressure Only Reading Up To 100 PSI, New Parts To Increase To 147 PSI. Read More »
This informational bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer. Read More »
This service bulletin provides information for accurate tire pressures that ensure the safe handling and appropriate ride characteristics of GM cars and trucks. Read More »
This informational bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer. Read More »
This Preliminary information communicates to technicians to advise dealership technicians to inspect the camshaft exciter wheel and replace it if necessary. Read More »
This bulletin updates the position of General Motors on refinishing fully color painted aluminum wheels with base paint. GM has established a new process for the way that refinishing under GM Warranty will be handled (U.S. ONLY). Read More »
This service bulletin provides repair information to correct customer concerns of Rear Wheel Lock Up, ABS Event, Loud Bang and a Flashing ?D? on Driver Information Center (DIC) when Lightly or Moderately Accelerating Forcing an 8-7 or 8-6 ... Read More »
This service bulletin provides information for dealers/technicians on Tire/Wheel Characteristics (Vibration, Balance, Shake, Flat Spotting) of GM Original Equipment Tires. Read More »
Customer Satisfaction Program. Certain vehicles may have had a double charge applied for the 20-inch aluminum wheels with accents at the time of vehicle purchase. Read More »
This informational bulletin advises the technician to check for faults that may be caused by the trailer otherwise found by a possible faulty trailer connector. Read More »
This Preliminary Information communication provides information to the technician on how to diagnose and repair vehicle that may have a "Check Trailer Wiring" or "Service Trailer Brake System? message on the Driver Information Center when ... Read More »
This Preliminary information communicates to dealership how to test properly trailer light option on the truck and also provide additional information on trailer issues. Read More »
This engineering information (EI) is requesting information from technicians to provided the engineers listed in regards to No Trailer Lights, No Brake Lights and/or Trailer Tow Receptacle is Loose. Read More »
This engineering information (EI) is requesting information from technicians to provided the engineers listed in regards to No Trailer Lights, No Brake Lights and/or Trailer Tow Receptacle is Loose. Read More »
This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards the trailer brake being inoperative and/or check trailer brakes message on drivers ... Read More »
This technical bulletin provides a procedure to replace the lower seat frame to correct the condition of Pop Noise Heard During Seat Travel and/or Inadequate Seat Rearward Travel due to a supplier installation error. Read More »
This technical bulletin provides a procedure to replace the lower seat frame to correct the condition of Pop Noise Heard During Seat Travel and/or Inadequate Seat Rearward Travel due to a supplier installation error. Read More »
This Preliminary Information communication provides information to the technician about vehicles that have an unwanted Stability Activation and/or a Service Stability message on the Driver Information Center. Read More »
This Preliminary information communicates to dealership technicians that if they receive a radio with the 2 stickers as noted above, the radio was remanufactured with missing components and will need to order another radio unit from the ... Read More »
This Preliminary Information communication provides information to the technician about vehicles that have an unwanted Stability Activation and/or a Service Stability message on the Driver Information Center. Read More »
This technical bulletin provides repair information to correct a customer concern of False Traction Control or Stability Event During Slow Speed Sharp Turns. Read More »
This Preliminary information communicates a "Forward Collision System Reduced" message displayed on the DIC when the Forward Automatic Braking has been set to the "Alert" setting. This is normal when the FAB has been set to "Alert". Read More »
This technical bulletin provides repair information to correct a customer concern of Service Front Camera Message on the Driver Information Center (DIC). Read More »
FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
This Preliminary information communicates an issue with adaptive cruise and lane keep assist inoperative due to an internal issue with the front view windshield camera. Dealers are to replace the camera. Read More »
FORWARD COLLISION AVOIDANCE: SENSING SYSTEM: CAMERA
This technical bulletin provides repair information to correct a customer concern of Service Front Camera Message on the Driver Information Center (DIC). Read More »
This technical bulletin provides repair information to correct a customer concern of Service Front Camera Message on the Driver Information Center (DIC). Read More »
This Preliminary information communicates information on how to disable the Side Blind Zone Detection and Park Assist systems when a customer removes the pickup box from the vehicle to install an aftermarket bed or body. Read More »
This Preliminary information communicates an issue with adaptive cruise and lane keep assist inoperative due to an internal issue with the front view windshield camera. Dealers are to replace the camera. Read More »
This Preliminary Information communication provides information to the technician about vehicles that are found to have a back-up alarm inoperative during the Pre-Delivery Inspection. Read More »
This Preliminary information communicates information on a hydrauilc rush type noise from the power steering gear. This noise is a characteristic of the new Active Hydraulic Assist System RPO NV8 and no repairs should be made. Read More »
This Preliminary information communicates information to the technician that if they receive a vehicle with this concern and verifying the rear view camera is zoomed in, General Motors is aware of this and have created a repair. Read More »
This Preliminary information communicates information to the technician that if they receive a vehicle with this concern and verifying the rear view camera is zoomed in, General Motors is aware of this and have created a repair. Read More »
This service bulletin provides repair information to correct a customer concern of Rear View Camera Coaxial Related Issues - DTCs B395A, B395B, B395C, B101E, B101D. Read More »
This Preliminary information communicates to the dealer technicians a warm engine knock noise has no short or long term effects on the engine. Do not attempt repairs for this noise. Read More »
This Preliminary information communicates information to the technician that if they receive a vehicle with this concern and verifying the rear view camera is zoomed in, General Motors is aware of this and working on a solution for the ... Read More »
This Preliminary Information communication provides information to the technician about vehicles that are found to have a back-up alarm inoperative during the Pre-Delivery Inspection. Read More »
This Preliminary information communicates an issues with a pop, clunk, knock, rattle type noise heard from the steering column over bumps and ask dealerships to replace the upper column shaft. Read More »
This Preliminary Information communication provides information to the technician about vehicles that are found to have a back-up alarm inoperative during the Pre-Delivery Inspection. Read More »
This Preliminary information communicates information on how to disable the Side Blind Zone Detection and Park Assist systems when a customer removes the pickup box from the vehicle to install an aftermarket bed or body. Read More »
This service bulletin provides information for customers/dealers/technicians on Normal Rearview Camera Display Operation - Flashing Diamond - Spot - or UFO like image on Rear View Camera Display. Read More »
This service bulletin provides information for customers/dealers/technicians on Normal Rearview Camera Display Operation - Flashing Diamond - Spot - or UFO like image on Rear View Camera Display. Read More »
This service bulletin provides information for customers/dealers/technicians on Normal Rearview Camera Display Operation - Flashing Diamond - Spot - or UFO like image on Rear View Camera Display. Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards one or more camera views showing intermittent behavior and/or totally ... Read More »
This Preliminary information communicates information on a hydrauilc rush type noise from the power steering gear. This noise is a characteristic of the new Active Hydraulic Assist System RPO NV8 and no repairs should be made. Read More »
This Preliminary Information communication provides information to the technician about vehicles that are found to have a back-up alarm inoperative during the Pre-Delivery Inspection. Read More »
This Preliminary Information communication provides information to the technician about vehicles that are found to have a back-up alarm inoperative during the Pre-Delivery Inspection. Read More »
This service bulletin provides repair information on release of Radio Software Version V160 Update to correct customer concerns of radio software issues. Read More »
This Preliminary information communication provides information to the technician on installing Regular Production Option Code UVC Rearview Camera. Read More »
This Preliminary information communication provides information to the technician on installing Regular Production Option Code UVC Rearview Camera. Read More »
This service bulletin provides repair information to correct a customer concern of Rear View Camera Issues - DTCs B395A, B395B, B395C, B101E, B101D. Read More »
This Preliminary information communicates that a customer may notice that the gridlines on the backup camera are very dim. They may mention that this occurred after an OTA update. The dealer technician is advised to perform no repairs. Read More »
This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content. Read More »
This Preliminary Information communication provides information to the technician that General Motors Technical Assistance Center may ask for Global Diagnostic System 2 Session Log. Read More »
This service bulletin provides information on the Transport Mode Feature, also known as Logistics mode, which is used to increase the 12V Battery stand time of the vehicle during transit and or long period of stand time at the dealerships. Read More »
This bulletin updates the position of General Motors on refinishing aluminum wheels. GM has determined that wheel refinishing under warranty will no longer be performed. Read More »
This informational bulletin advises the technician to check for faults that may be caused by the trailer otherwise found by a possible faulty trailer connector. Read More »
This informational bulletin provides information on availability for a locking gas cap for trucks are operated in high amount of dirt or dust which can migrate to the filler cap area. Read More »
This service bulletin helps diagnose/reduce possible CCND issues on Transfer Cases - Service 4WD on DIC, Intermittent Failures, Noise Concerns, Driveline/Steering Vibration/Shudder, Intermittent DTCs/MIL Illuminated, ... Read More »
This service bulletin assists technicians in setting up PicoScope hardware/software to monitor CAN bus traffic (voltage patterns) to aid Technical Assistance (TAC) and Field Service Engineers (FSEs) in diagnosing electrical issues present ... Read More »
This service bulletin provides a Diagnostic Tip for Noise, Vibration, and/or Harshness Issues/Clunk Noise Heard During Coast Down Event after the transfer case was removed from the transmission and reinstalled during a recent repair. Read More »
This informational bulletin advises the technician to check for faults that may be caused by the trailer otherwise found by a possible faulty trailer connector. Read More »
This service bulletin helps diagnose/reduce possible CCND issues on Transfer Cases - Service 4WD on DIC, Intermittent Failures, Noise Concerns, Driveline/Steering Vibration/Shudder, Intermittent DTCs/MIL Illuminated, ... Read More »
This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content. Read More »
This service bulletin assists technicians in setting up PicoScope hardware/software to monitor CAN bus traffic (voltage patterns) to aid Technical Assistance (TAC) and Field Service Engineers (FSEs) in diagnosing electrical issues present ... Read More »
This service bulletin helps diagnose/reduce possible CCND issues on Transfer Cases - Service 4WD on DIC, Intermittent Failures, Noise Concerns, Driveline/Steering Vibration/Shudder, Intermittent DTCs/MIL Illuminated, ... Read More »
This information bulletin advises the technician the difference between a welch cap leak and the output seal of the t-case or transmission leaking ATF, causing the customer concern of a Red Fluid Leak from Center of Vehicle Located by ... Read More »
This technical bulletin provides a procedure to program the Reductant Control Module and Setup and Perform the Reductant Fluid Tank Level Reset. Read More »
This service bulletin provides a Diagnostic Tip for Noise, Vibration, and/or Harshness Issues/Clunk Noise Heard During Coast Down Event after the transfer case was removed from the transmission and reinstalled during a recent repair. Read More »
This informational bulletin provides information on Outside Rear View Mirror Defog or Defrost Times Different for Passenger and Driver Mirrors. Read More »
This Warranty Administration service bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA). Read More »
This service bulletin provides information for dealers/technicians on accessory all-weather floor liners and flat mats warped or misshapen. Read More »
This service bulletin provides information on the Transport Mode Feature, also known as Logistics mode, which is used to increase the 12V Battery stand time of the vehicle during transit and or long period of stand time at the dealerships. Read More »
This service bulletin provides repair information to correct a customer concern of Rear View Camera Issues - DTCs B395A, B395B, B395C, B101E, B101D. Read More »
This technical bulletin provides repair information to correct a customer concern of the foam strip between the I/P trim and base of the windshield detaching from the upper I/P trim panel. Read More »
This service bulletin provides radio software version 135120 (IOR) update procedures to correct customer concerns of software related issues. Read More »
This technical bulletin provides repair information to correct a customer concern of seeing the trailer running lights shut off due to excessive load on the running lamp circuit. Read More »
This technical bulletin provides repair information to correct a customer concern of Trailer Tire Pressure Only Reading Up To 100 PSI, New Parts To Increase To 147 PSI. Read More »
This service bulletin provides information on the Transport Mode Feature, also known as Logistics mode, which is used to increase the 12V Battery stand time of the vehicle during transit and or long period of stand time at the dealerships. Read More »
This service bulletin provides repair information to correct a customer concern of Rear View Camera Coaxial Related Issues - DTCs B395A, B395B, B395C, B101E, B101D. Read More »
This technical bulletin provides repair information to correct a customer concern of Service 4a??Wheel Drive Message Illuminated in DIC with DTC C119E Set During Antilock Brake System Event. Read More »
This technical bulletin provides repair information to correct a customer concern of Volume Selection Does Not Clear from DIC After Adjusting Volume. Read More »
This service bulletin provides information for the Global Warranty Management (GWM) Warranty Parts Center (WPC) Part Photo Return Process (U.S. Dealers Only). Read More »
This technical bulletin provides repair information to correct a customer concern of the Tri-Fold Tonneau paint finish fading or discolored. Read More »
This informational bulletin provides information for dealers/technicians on Information on GM Accessories - Instructions on Claim Submission on Dealer-Replaced Tonneau Covers During Warranty Period. Read More »
This Warranty Administration bulletin provides policy information on Causal Part requirements for transactions submitted to GM for payment. Read More »
This technical bulletin provides repair information to correct a customer concern of Unable to Dismiss Turn By Turn Directions from the DIC. Read More »
This warranty administration bulletin provides policy information requirements applicable to key fob replacement under the New Vehicle Limited Warranty or under a Replacement Parts Warranty on 2017-2022 and newer model year vehicles with ... Read More »
This service bulletin provides diagnostic/repair information to correct a customer concern of Cellphone not Charging or USB Receptacle Inoperative. Read More »
This service bulletin provides radio software version 135120 (IOR) update procedures to correct customer concerns of software related issues. Read More »
This service bulletin provides repair information on release of Radio Software Version V160 Update to correct customer concerns of radio software issues. Read More »
This service bulletin provides radio software version 135120 (IOR) update procedures to correct customer concerns of software related issues. Read More »
This warranty administration bulletin provides policy information requirements applicable to key fob replacement under the New Vehicle Limited Warranty or under a Replacement Parts Warranty on 2017-2022 and newer model year vehicles with ... Read More »
This service bulletin provides repair information to correct a customer concern of Radio System Settings Lost or Returning to Default Values. Read More »
This technical bulletin provides repair information to correct a customer concern of power assist steps inoperative / reverse after being deployed / erratic 0peration. Read More »
This service bulletin provides repair information on release of Radio Software Version V160 Update to correct customer concerns of radio software issues. Read More »
This service bulletin provides radio software version 135120 (IOR) update procedures to correct customer concerns of software related issues. Read More »
This Preliminary Information communication provides information to the technician about vehicles with tire sidewall irregularities. This is a visual condition that will not affect durability, reliability or performance of the tires. Read More »
This service bulletin provides service information/procedures on continuous improvement Radio Software Version V158 Update to address customer comments on software related issues. Read More »
This service bulletin provides information for dealers/technicians on accessory all-weather floor liners and flat mats warped or misshapen. Read More »
This technical bulletin provides repair information to correct a customer concern of Black Radio Display Screen and No Communication with the Video Processing Module (VPM). Read More »
This service bulletin provides a procedure inspecting for excess grease or Sealant on the Exterior of the steering gear due to seeing grease or sealant on certain locations on the gear. Read More »
This service bulletin provides information on GM Canada New Vehicle Tire Warranty Program for Original Equipment (OE) Tires and PDI installed Limited Production Option (LPO) Tires. Read More »
This service bulletin provides repair information to correct a customer concern of Radio System Settings Lost or Returning to Default Values. Read More »
This service bulletin provides radio software version 135120 (IOR) update procedures to correct customer concerns of software related issues. Read More »
This bulletin updates the position of General Motors on refinishing fully color painted aluminum wheels with base paint. GM has established a new process for the way that refinishing under GM Warranty will be handled (U.S. ONLY). Read More »
This informational bulletin provides technicians and dealership personnel with spray-in bed liner general information and repair procedures. Read More »
This Preliminary information communicates information on how dealers can contact the supplier for Associated Accessories offered through GM. Read More »
This preliminary informational bulletin provides information on Damaged, Disassembled or Improperly Packaged Turbochargers Returned to Warranty Part Center. Read More »
This informational bulletin advises the technician to not replace the TMAP sensor, clean it using air or harsh chemicals but allow time for the sensor to thaw. Read More »
This Preliminary information communication provides information to the technician on installing Regular Production Option Code 9L7 Up-fitter Auxiliary Switches. Read More »
This informational bulletin provides information on Clean Exhaust Filter See Owners Manual Now or Cleaning Exhaust Filter Keep Driving Until Message is Cleared messages Displayed on DIC, DTC P2463 May Be Set. Read More »
The intent of this technical bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them. Read More »
This Preliminary information communicates to the dealer an issue where a vehicle may be exhibiting an engine noise condiion. The dealer is instructed on how to isolate the noise to a specific area of the engine for further diagnosis. Read More »
This service bulletin provides information for customers/dealers/technicians on Normal Rearview Camera Display Operation - Flashing Diamond - Spot - or UFO like image on Rear View Camera Display. Read More »
This service bulletin provides information for dealers/technicians and customers on steam/vapor coming from the front grille or radiator area. Read More »
This technical bulletin provides a procedure This technical bulletin provides repair information to correct a customer concern of Unable to Set PIN to Enable Teen Driver Feature. Read More »
This Preliminary information communicates A customer vehicle may have a concern of a P0300 setting after bulletin 21-NA-154 has been performed. Unknown Engineering is looking it to this concern Read More »
This Preliminary information communicates multiple vehicle issues caused by an aftermarket device and it gives dealership information where to inspect for this device. Read More »
This Preliminary Information communication provides information to the technician about installing General Motors Accessory parts/kits. Technicians should refer to Service Information for information regarding most accessories. Read More »
This service bulletin provides information for dealers/technicians on Exterior Lamp Condensation and Water Leaks and Replacement Guidelines. Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the trailer light message and/or trailer disconnect message on the ... Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the Service Engine Soon Lamp illuminated on Driver Information Center. Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards the Service Engine Soon (SES) lamp illuminated and/or Service Emission System ... Read More »
This informational bulletin provides technicians and dealership personnel with spray-in bed liner general information and repair procedures. Read More »
This Warranty Administration bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA). Read More »
This Warranty Administration bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA). Read More »
This informational bulletin provides technicians and dealership personnel with spray-in bed liner general information and repair procedures. Read More »
This informational bulletin provides information for dealers/technicians on Information on GM Accessories - Instructions on Claim Submission on Dealer-Replaced Tonneau Covers During Warranty Period. Read More »
This informational bulletin provides information for dealers/technicians on Information on GM Accessories - Instructions on Claim Submission on Dealer-Replaced Tonneau Covers During Warranty Period. Read More »
This service bulletin provides information regarding Witness Marks from Panel Adjustments Made During Manufacturing and that it is considered a normal condition. Read More »
This service bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement. Read More »
This warranty administration bulletin provides policy information, proper labor operation selection and causal part identification for warranty transactions (U.S. Only). Read More »
This service bulletin provides information for dealers/technicians on When and How to Submit a Field Product Report (FPR) (U.S. Dealers Only). Read More »
This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim. Read More »
This Warranty Administration bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA). Read More »
This informational bulletin directs dealers to the correct path needed to correct a vehicle with the condition of Add-On Equipment Inoperative, Sulfur/Acid Smell During Vehicle Operation based on the correct cause. Read More »
This informational bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before sold (prepping) to the customer. Read More »
This service bulletin provides information for dealers/technicians on accessory all-weather floor liners and flat mats warped or misshapen. Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards the trailer brake being inoperative and/or check trailer brakes message on ... Read More »
This technical bulletin provides repair information to correct a customer concern of Clean Exhaust Filter, Perform Manual Regen, and Loss of Digital Speedometer DIC Displays. Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards check to the engine lamp being illuminated on the drivers information center ... Read More »
This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to Service Engine Soon Lamp Illuminated On Driver Information Center (DIC), DTC ... Read More »
This informational bulletin advises the technician on what to do if the DEF pump has been replaced and perform a leak test to prime the pump. Read More »
This Warranty Administration bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA). Read More »
This Warranty Administration bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA). Read More »
This engineering information (EI) is requesting information from technicians to provided the engineers listed in regards to No Trailer Lights, No Brake Lights and/or Trailer Tow Receptacle is Loose. Read More »
This service bulletin provides a diagnostic procedure to aid in correcting a customer concern of a Howling, Whining/Whirring Noise, Shudder/Vibration and/or Grinding Noise While in 4HI, 4HI Auto and/or During Parking Lot Maneuvers in Auto ... Read More »
This technical bulletin provides a procedure to replace the 4 5 6 clutch housing if the bushing was found worn and the cause of the customers concern. Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards an intermittent no start. Read More »
This informational bulletin provides information on Clean Exhaust Filter See Owners Manual Now or Cleaning Exhaust Filter Keep Driving Until Message is Cleared messages Displayed on DIC, DTC P2463 May Be Set. Read More »
This informational bulletin provides a procedure on how to perform a quick test to check if the DPF is the cause of excessive soot from the tailpipe. Read More »
This informational bulletin advises the technician to not replace the TMAP sensor, clean it using air or harsh chemicals but allow time for the sensor to thaw. Read More »
This bulletin provides information on common diesel engine tick noises and how they are considered part of normal operation and no parts should be replaced for these normal operating conditions. Read More »
The intent of this technical bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them. Read More »
This warranty administration bulletin provides information on Warranty Administration - Customer Concern Not Duplicated (CCND) Labor Operation Numbers. Read More »
This Warranty Administration bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA) (US dealers only). Read More »
This engineering information (EI) is requesting information from technicians to provided the engineers listed in regards to No Trailer Lights, No Brake Lights and/or Trailer Tow Receptacle is Loose. Read More »
This bulletin provides information on the Transport Mode On Message Being Displayed in the Driver Information Center (DIC) and/or Battery Light is Flashing and the procedures to turn the Transport Mode message ON and OFF. Read More »
This Preliminary information communicates Possible Crank no start or extended crank with DTC p12A6 set current or history. Under Investigation Read More »
This Preliminary information communicates the use of air leak diagnostic test tool CH-52250 in addition to the information found in the service manual. Read More »
This Preliminary information communicates an issue where GM Accessory Illuminated Emblem may cause an issue with the left headlight/turn signal and dealership are to disable the Accessory Illuminated Emblem until a fix is available. Read More »
This Preliminary information communicates an issue where the vehicles wireless charger no longer works with certain ISO updates on Apple 15 phones and advises customer to update their phone to the lastest ISO update. Read More »
This Preliminary information communicates a diagnostic tip for the 110 /120 volt power outlets being inoperative and dealerships should try a battery disconnect to see if the concern goes away. Read More »
This Preliminary information communicates that it is normal for the tailgate to drop faster than it used to after the GM Accessory Kicker Audio System is installed. Read More »
This service bulletin provides repair information on release of Radio Software Version V160 Update to correct customer concerns of radio software issues. Read More »
This Preliminary information communication provides information to the technician on installing Regular Production Option Code 9L7 Up-fitter Auxiliary Switches. Read More »
This service bulletin provides policy information on warranty administration guidelines for multiple repairs with independent causes (GM Canada Dealers Only). Read More »
This warranty administration bulletin provides policy information requirements applicable to key fob replacement under the New Vehicle Limited Warranty or under a Replacement Parts Warranty on 2017-2022 and newer model year vehicles with ... Read More »
This service bulletin provides information for dealers/technicians on Normal Characteristic - Wireless Phone Projection Audio Cuts Out Every 10 Seconds on New/Unsold Vehicles. Read More »
This service bulletin provides repair information to correct a customer concern of Radio System Settings Lost or Returning to Default Values. Read More »
This service bulletin provides repair information to correct a customer concern of Radio System Settings Lost or Returning to Default Values. Read More »
This Preliminary information provides a proactive communication to dealers advising that engineering is aware of the Turn by Turn concern, and working on a resolution. Read More »
This Preliminary information communicates an issue where the vehicles wireless charger no longer works with the lastest ISO update on Apple 15 phones. Read More »
This Preliminary Information communication provides information to the technician how to repair vehicles that Instrument Panel Cluster, Radio, and Heater-Vent-Air Conditioning display blanks out, Bluetooth phone or Pandora connection ... Read More »
This Preliminary information communicates an issue where the vehicles wireless charger no longer works with the lastest ISO update on Apple 15 phones. Read More »
This Preliminary information communicates that it is normal for the tailgate to drop faster than it used to after the GM Accessory Kicker Audio System is installed. Read More »
This Preliminary information communicates an issue where the vehicles wireless charger no longer works with the lastest ISO update on Apple 15 phones. Read More »
This bulletin provides information on common diesel engine tick noises and how they are considered part of normal operation and no parts should be replaced for these normal operating conditions. Read More »
This service bulletin provides information on submitting quality Photos of Various Vehicle Concerns to the GM Technical Assistance Center (TAC). Read More »
This service bulletin provides information on All hazmat parts being returned to the Warranty Parts Center (WPC) must be shipped using Central Transport. Hazardous materials should never be sent by air transportation to the WPC. Read More »
This Preliminary Information communication advises the technician with a tip when the vehicle stops running after it has been idling for 2.5 hours. Read More »
This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim. Read More »
This Preliminary Information communication provides information to the technician about vibration complaints that are one of the most challenging complaints to accurately diagnose and repair. Read More »
This Warranty Administration bulletin provides information on the Global Warranty Management (GWM) Warranty Parts Center (WPC) Parts Return Program. Read More »
This service bulletin provides information for dealers/technicians on When and How to Submit a Field Product Report (FPR) (U.S. and Canada Dealers Only). Read More »
This Warranty Administration service bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA). Read More »
This Preliminary Information communication provides information to the technician about vehicles that have an unusual noise and is difficult to identify, isolate or pinpoint. Read More »
This service bulletin provides information on submitting quality Photos of Various Vehicle Concerns to the GM Technical Assistance Center (TAC). Read More »
This service bulletin provides information for dealers/technicians on When and How to Submit a Field Product Report (FPR) (U.S. Dealers Only). Read More »
This warranty administration bulletin provides policy information, proper labor operation selection and causal part identification for warranty transactions (U.S. Only). Read More »
This warranty administration bulletin provides policy information for variable diagnostic time allowances on select labor operations (U.S. Only). Read More »
This service bulletin provides information for accurate tire pressures that ensure the safe handling and appropriate ride characteristics of GM cars and trucks. Read More »
This service bulletin provides information for dealers/technicians on When and How to Submit a Field Product Report (FPR) (U.S. Dealers Only). Read More »
This Warranty Administration bulletin provides retail and wholesale service personnel with the policies/procedures and the warranty transaction submission procedures that support the Personal Property Damage process. Read More »
This Preliminary information communicates information on how dealers can contact the supplier for Associated Accessories offered through GM. Read More »
This Preliminary Information communication provides information to the technician that General Motors Technical Assistance Center may ask for Global Diagnostic System 2 Session Log. Read More »
This Preliminary Information communication provides information to the technician that General Motors Technical Assistance Center may ask for Global Diagnostic System 2 Session Log. Read More »
This Preliminary information provides a proactive communication to dealers advising that engineering is aware of the Turn by Turn concern, and working on a resolution. Read More »
This service bulletin provides information on Handling Requests for Modifications to Permanently Import/Export Vehicles Between the U.S. and Canada. Read More »
This Warranty Administration service bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA). Read More »
This Warranty Administration service bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA). Read More »
This Preliminary information provides a proactive communication to dealers advising that engineering is aware of the Turn by Turn concern, and working on a resolution. Read More »
This service bulletin provides information on GM Canada New Vehicle Tire Warranty Program for Original Equipment (OE) Tires and PDI installed Limited Production Option (LPO) Tires. Read More »
This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim. Read More »
This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim. Read More »
This Preliminary information provides information to the technician on installing a roof beacon light. Technician will need to reference the latest version of General Motors Up-fitter Integration Bulletin 157. Read More »
This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content. Read More »
This service bulletin provides information for the Global Warranty Management (GWM) Warranty Parts Center (WPC) Part Photo Return Process (U.S. Dealers Only). Read More »
This service bulletin provides information for dealers/technicians on Use of Dealer Case Management (DCM) and Being Prepared for Contacting U.S. Technical Assistance (TAC). Read More »
This Warranty Administration bulletin provides information on Global Warranty Management (GWM) Warranty Parts Center (WPC) Parts Return Program Information. Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards the Articulated Running Board (ARB). Read More »
This informational bulletin advises the technician on what to do if the DEF pump has been replaced and perform a leak test to prime the pump. Read More »
GSA Example: This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the service 4WD message illuminated on the drivers ... Read More »
This warranty administration bulletin provide policy information for variable diagnostic time allowances on select labor operations (U.S. Only). Read More »
This informational bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before sold (prepping) to the customer. Read More »
This technical bulletin provides repair information to correct a customer concern of Diagnostic Tips For Park Assist Off Message / Unwanted Or False Park Assist Alerts / No DTCs. Read More »
This service bulletin provides information for dealers/technicians on Exterior Lamp Condensation and Water Leaks and Replacement Guidelines. Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the trailer light message and/or trailer disconnect message on the ... Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the Service Engine Soon Lamp illuminated on Driver Information Center. Read More »
This service bulletin provides information for dealers/technicians on accessory all-weather floor liners and flat mats warped or misshapen. Read More »
This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to Service Engine Soon Lamp Illuminated On Driver Information Center (DIC), DTC ... Read More »
This technical bulletin provides a procedure to replace the 4 5 6 clutch housing if the bushing was found worn and the cause of the customers concern. Read More »
This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards an intermittent no start. Read More »
This informational bulletin provides a procedure on how to perform a quick test to check if the DPF is the cause of excessive soot from the tailpipe. Read More »
This engineering information (EI) is requesting information from technicians to provided the engineers listed in regards to No Trailer Lights, No Brake Lights and/or Trailer Tow Receptacle is Loose. Read More »
This informational bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before sold (prepping) to the customer. Read More »
This service bulletin provides a vibration analysis worksheet the technician can use in conjunction with the appropriate Vibration Analysis-Road testing procedure, when diagnosing vibration concerns. Read More »
This service bulletin provides a diagnostic aid procedure on how to perform a quick test to check if the DPF is the cause of excessive soot from the tailpipe. Read More »
This Preliminary information communicates a GM part number for reflective high temperature heat or insulating tape when repairing wiring harnesses. Read More »
This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations. Read More »
