Technical Service Bulletins (TSBs) for the 2012 Sierra 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.
CADILLAC/CHEVROLET/GMC: WILL HAVE INOPERATIVE CRUISE CONTROL; INOPERATIVE OR UNWANTED ACTIVATION OF RADIO CONTROLS; BACKLIGHTING FLASHES, FLICKERS OR INOPERATIVE DUE TO POSSIBLE SHORT TO GROUND ON STEERING WHEEL COIL CONNECTOR X2. Read More »
BUICK/CADILLAC/CHEVROLET/GMC/PONTIAC/ SATURN: THERE IS FLUID LEAKING FROM POWER STEERING SYSTEM, ALONG A FLUID LEAK IN FRONT OF VEHICLE UNDERNEATH AND SHOULD BE INSPECTED, CLEANED AND IDENTIFIED BEFORE REPAIRING OR REPLACING. Read More »
GMC: HYDRAULIC POWER STEERING LEAK AT HOSE CONNECTION TO STEERING RACK. ALL POTENTIAL LEAKS SHOULD BE COMPLETELY CLEANED AND INDENTIFIED BEFORE ATTEMPTING TO REPAIR OR REPLACE ANY POWER STEERING COMPONENTS. *JS UPDATED 4/22/13. Read More »
STEERING:HYDRAULIC POWER ASSIST:POWER STEERING FLUID
BUICK/CADILLAC/CHEVROLET/GMC/PONTIAC/ SATURN: THERE IS FLUID LEAKING FROM POWER STEERING SYSTEM, ALONG A FLUID LEAK IN FRONT OF VEHICLE UNDERNEATH AND SHOULD BE INSPECTED, CLEANED AND IDENTIFIED BEFORE REPAIRING OR REPLACING. Read More »
CHEVROLET/GMC: A CLUNKING NOISE COMING FROM THE REAR OF THE VEHICLE. UPON FURTHER INVESTIGATION, THE TECHNICIAN MAY DIAGNOSE THE NOISE COMING FROM THE REAR SUSPENSION LEAF SPRING AREA. *PE UPDATED 6/30/2011. Read More »
CHEVROLET/GMC: A CLUNKING NOISE COMING FROM THE REAR OF THE VEHICLE. UPON FURTHER INVESTIGATION, THE TECHNICIAN MAY DIAGNOSE THE NOISE COMING FROM THE REAR SUSPENSION LEAF SPRING AREA. *PE UPDATED 6/30/2011. Read More »
CHEVROLET/GMC: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. ON SOME 2011-2012 TRUCKS, A GRINDING NOISE AND VIBRATION WOULD BE NOTICEABLE DUE TO THE REAR AXLE RIGHT HAND SIDE BEARING ADJUSTER CLIP AND BOLT MAY COME LOOSE INSIDE OF ... Read More »
GMC/CHEVROLET/CADILLAC: INSTRUMENT PANEL MESSAGES REGARDING STABILITRAK MESSAGE, TRACTION CONTROL MESSAGE, SERVICE BRAKE SYSTEM MESSAGE, IS OFF AND GAUGES, IN VARIOUS MODULES LOW SPEED SETTINGS, ARE INOPERATIVE. Read More »
GENERAL MOTORS: OWNERS MAY COMPLAIN ABOUT UNWANTED BRAKING, OR REDUCED ENGINE POWER. THERE MAY ALSO BE SOME UP AND DOWN SHIFTS WITH THE TRANSMISSION. *KB UPDATED 10/15/14. *PE UPDATED 11/12/14. Read More »
CHEVROLET/GMC/CADILLAC: BRAKE PEDAL POSITION (BPP) SENSOR HAS RELATED ISSUES AFTER NORMAL DIAGNOSTICS, REGARDING CONNECTOR X205, TERMINAL CONCERN, CRUISE/BRAKE LIGHT OR SERVICE STABILITY MESSAGE OR REDUCED ENGINE POWER. Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT VEHICLES THAT MAY HAVE A COLD ENGINE TICK NOISE FOR 50 SECONDS AT START UP. Read More »
CADILLAC/CHEVROLET/GMC: ON SOME VEHICLES AND/OR TRUCKS, INSTRUMENT CLUSTER WILL ILLUMINATE, AFTER AN OIL CHANGE, INDICATING LOW OIL PRESSURE AND/OR SES LAMP WILL ILLUMINATE. Read More »
CHEVROLET/GMC: WHEN AMBIENT TEMPERATURE REACHES 103F OR GREATER AND ACCELERATING FROM A STOP, THERE IS A LACK OF POWER FROM ENGINE. MODEL 2010-14 AVALANCHE, SILVERADO, SUBURBAN, TAHOE, SIERRA, YUKON. Read More »
GMC/CHEVROLET: ENGINES, WITH EGR SYSTEM, HAS LEAKAGE FROM EGR COOLER ENGINE COOLANT INTO THE COMBUSTION CHAMBER. MODEL 2002-15 SILVERADO, SIERRA, 2004-09 KODIAK C4500-C5500, TOPKICK C4500-C5500, 2006-15 EXPRESS, SAVANA. Read More »
GMC/CHEVROLET: SOME VEHICLES/TRUCKS MAY EXPERIENCE A NO CRANKING OR STARTING, CAUSED BY POSSIBLE EXCESSIVE LEAKAGE FROM CYLINDER PAST EXHAUST OR INTAKE VALVE, LOW STATIC COMPRESSION, SENSOR IS DISCONNECTED, OR WHILE CRANKING, VALVE TRAIN ... Read More »
CHEVROLET/GMC: AFTER COLD STARTING ENGINE AND PLACING IN GEAR, WOULD HAVE A ROUGH IDLE AND/LACK OF POWER, MOMENTARILY BEFORE STARTUP A FEW MINUTES LATER. MODELS 2009-2013 EXPRESS, SILVERADO, SUBURBAN, SAVANA, SIERRA. Read More »
CHEVROLET/GMC: STARTER MOTOR, ON CERTAIN SUVS, MAY WEAR THRU, AFTER CONTACT, WIRING INSULATION, WHICH CAUSES CIRCUIT CONDITION TO SHORT OUT. STARTER MOTOR BECOMES INOPERATIVE. MODELS 2013 CHEVROLET AVALANCHE, SILVERADO AND GMC SIERRA. Read More »
GM: GAUGE FLUCTUATION, VARIOUS DTCS, AND THE WIRING HARNESS MAY BE CHAFING/RUBBING ON A/C LINE. *JS UPDATED 5/22/12. *JS UPDATED 2/5/16. *PE Read More »
GENERAL MOTORS: AN OPTIONAL ENGINE BLOCK HEATER PLUG IN FOR ONBOARD AC POWER AND WITH CONTINUOUS USAGE WILL RESULT IN SHORTING OF WIRES, OVER HEATING SYSTEM, ELECTRICAL FAILURE AND COMPARTMENT ENGINE FIRES. Read More »
GENERAL MOTORS: OWNERS MAY COMPLAIN ABOUT UNWANTED BRAKING, OR REDUCED ENGINE POWER. THERE MAY ALSO BE SOME UP AND DOWN SHIFTS WITH THE TRANSMISSION. *KB UPDATED 10/15/14. *PE UPDATED 11/12/14. Read More »
GENERAL MOTORS: TROUBLE MOVING THE VEHILCE IN FORWARD OR REVERSE. THIS COULD BEGIN TO HAPPEN AFTER THE REPLACEMENT OF THE SPIN-ON OIL FILTER. DTC CODES P0701, P0729, P0731, P0732, P0733, P0734, P0735, P0751, P0756, P0761, P0877 OR P2723. Read More »
GENERAL MOTORS: LOW ENGINE OIL PRESSURE, NO OIL PRESSURE, AND/OR ENGINE NOISE. THIS COULD BE THE RESULT OF A STICKING OIL PUMP PRESSURE RELIEF VALVE. *KB Read More »
ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS
GMC/CHEVROLET: TO ASSIST ENGINEERING PRODUCT FEEDBACK, PARTS FOR DURAMAX DIESEL ENGINE, HAS BEEN PLACED ON RESTRICTIONS, BY PRODUCT QUALITY CENTER (PQC). MODEL 2010-16 DURAMAX. *PE Read More »
GENERAL MOTORS: SERVICE ENGINE SOON LIGHT ILLUMINATED ON DASH. THERE MAY ALSO BE INCREASED ENGINE NOISE, OR POSSIBLE HIGHER RPM SHIFTS, AND REDUCED A/C PERFORMANCE. *KB Read More »
GMC/CHEVROLET: THERE MAY BE AN ACCUMULATION OF DIESEL PARTICULATE FILTER SOOT LEVEL FOUND WHEN A DIAGNOSTIC SYSTEM CHECK IS PERFORMED AND MAY BE CAUSED BY ENGINE CONTROL MODULE (ECM) WITH A REDUCED ENGINE POWER MESSAGE. Read More »
GM: GAUGE FLUCTUATION, VARIOUS DTCS, AND THE WIRING HARNESS MAY BE CHAFING/RUBBING ON A/C LINE. *JS UPDATED 5/22/12. *JS UPDATED 2/5/16. *PE Read More »
ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS
GMC: CORRECT FRONT AXLE VENT HOSE ROUTING. THE FRONT AXLE VENT HOSE IS MOUNTED IN THE LEFT SIDE OF THE ENGINE COMPARTMENT, AND MAY NOT BE CORRECTLY ROUTED. *PE UPDATED ON 5/1/2012. *KB Read More »
ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE)
GMC/CHEVROLET: ENGINES, WITH EGR SYSTEM, HAS LEAKAGE FROM EGR COOLER ENGINE COOLANT INTO THE COMBUSTION CHAMBER. MODEL 2002-15 SILVERADO, SIERRA, 2004-09 KODIAK C4500-C5500, TOPKICK C4500-C5500, 2006-15 EXPRESS, SAVANA. Read More »
CHEVROLET/GMC: AT HIGH PRESSURE PUMP TO HIGH PRESSURE FUEL LINES THERE ARE SIGNS OF FUEL LEAKAGE AND/OR FUEL ODOR. *PE UPDATED ON 5/2/2012. *KB Read More »
FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS
CHEVROLET/GMC: AT HIGH PRESSURE PUMP TO HIGH PRESSURE FUEL LINES THERE ARE SIGNS OF FUEL LEAKAGE AND/OR FUEL ODOR. *PE UPDATED ON 5/2/2012. *KB Read More »
GM: DURAMAX DIESEL HARD START, NO START, OR DTC P0087 INJECTION PUMP REPLACEMENT. NORMAL SI DIAGNOSTICS MAY BE INCONCLUSIVE OR LEAD TO A FUEL INJECTION PUMP REPLACEMENT. *JS UPDATED 11/12/14. Read More »
GMC/CHEVROLET: AT BOTTOM OF FLYWHEEL HOUSING, A LEAK IS FOUND, CAUSING A FUEL ODOR, DUE TO HIGH PRESSURE PUMP TO HIGH PRESSURE LINE FITTING OR FUEL RAIL CONNECTION. 2010-2015 EXPRESS, SIERRA, SAVANA, SILVERADO. Read More »
GM: GAUGE FLUCTUATION, VARIOUS DTCS, AND THE WIRING HARNESS MAY BE CHAFING/RUBBING ON A/C LINE. *JS UPDATED 5/22/12. *JS UPDATED 2/5/16. *PE Read More »
GMC/CHEVROLET: AT BOTTOM OF FLYWHEEL HOUSING, A LEAK IS FOUND, CAUSING A FUEL ODOR, DUE TO HIGH PRESSURE PUMP TO HIGH PRESSURE LINE FITTING OR FUEL RAIL CONNECTION. 2010-2015 EXPRESS, SIERRA, SAVANA, SILVERADO. Read More »
GMC/CHEVROLET: AT BOTTOM OF FLYWHEEL HOUSING, A LEAK IS FOUND, CAUSING A FUEL ODOR, DUE TO HIGH PRESSURE PUMP TO HIGH PRESSURE LINE FITTING OR FUEL RAIL CONNECTION. 2010-2015 EXPRESS, SIERRA, SAVANA, SILVERADO. Read More »
GM: SOME VEHICLES MAY DISPLAY ON THE DRIVER INFORMATION CENTER (DIC) "TRANSMISSION HOT- IDLE ENGINE". DTC U0101 MAY BE SET. MIL MAY BE ILLUMINATED. *JS Read More »
Some customers may comment that the vehicle has reduced acceleration at low speed and/or transmission is slipping from a launch. Technicians may find DTC P0751 set or stored in history. Read More »
GMC/CHEVROLET: TSB CONTAINS AN OWNER'S NOTIFICATION LETTER. SELECT DOCUMENT SEARCH BUTTON BELOW. WHEN SHIFTING FROM FIRST GEAR TO SECOND GEAR, HARSH SHIFTING IS EXPERIENCE AND MALFUNCTION INDICATOR LAMP (MIL) WILL ILLUMINATE. Read More »
GENERAL MOTORS: OWNERS MAY COMPLAIN ABOUT UNWANTED BRAKING, OR REDUCED ENGINE POWER. THERE MAY ALSO BE SOME UP AND DOWN SHIFTS WITH THE TRANSMISSION. *KB UPDATED 10/15/14. *PE UPDATED 11/12/14. Read More »
CHEVROLET/GMC: AT TIME OF PRODUCTION, SOME VEHICLES WERE MANUFACTURED WITH AN INCORRECT TRANSMISSION THRUST BEARING, THAT CAN RESULT IN NOISE AND POOR OPERATION OF TRANSMISSION. MODEL 2012 SILVERADO HD, SIERRA HD. Read More »
GM: THERE ARE TRANSMISSION PROBLEMS THAT INCLUDE TROUBLE SHIFTING AND NOISES. THERE MAY BE SERPENTINE BELT PROBLEMS CAUSING IT. *RM UPDATED ON 06/27/2011. *KB UPDATED 3/12/12. *PE UPDATED 1/2/14. Read More »
CADILLAC/CHEVROLET/GMC/HUMMER/PONTIAC: THERE IS SLIPPING OR HAVE NO FOURTH, FIFTH OR SIXTH GEAR AND MALFUNCTION INDICATOR LAMP (MIL) WOULD BE ON, WITH DIAGNOSTIC TROUBLE CODE (DTC) P0796 FOUND AS ACTIVE. Read More »
GMC/CHEVROLET: SOME TRUCKS, EQUIPPED WITH AUTOMATIC TRANSMISSION 4L60E, MAY EXPERIENCE SLIPPING, MISSED OR LATE SHIFTS IN 3RD AND 4TH GEARS DUE TO POSSIBLE 3-4 CLUTCH DISTRESS. *PE Read More »
GM: TICK OR RATTLE NOISE FROM FRONT OF DASH, TRANSMISSION FILLER TUBE CRACKED OR BROKEN (INSPECT FILLER TUBE, REPLACE TUBE AS NECESSARY). *JS UPDATED 05/3/2013 *JS Read More »
CADILLAC/CHEVROLET/GMC/HUMMER: SOME SUVS AND TRUCKS ARE EXHIBITING A CONDITION WHERE BY GRINDING/RATCHETING TYPE NOISE COMING FROM AUTOMATIC TRANSMISSION WHEN SHIFTING INTO PARK WHILE IN 4WD LOW (4LO) RANGE. Read More »
GM: THE TRANSMISSION IS SLIPPING OR HAS NO FORWARD/REVERSE MOVEMENT. *RM UPDATED 4/16/12. *PE UPDATED 6/18/12. *PE UPDATED ON 7/09/2013. *KB Read More »
GMC/CHEVROLET: MALFUNCTION INDICATOR LAMP (MIL) IS ILLUMINATED AND HAS A HARSH SHIFT 1-2. THE TCC ENABLE SOLENOID AND WIRE HARNESS SHOULD BE REPLACED WHEN REPAIRS ARE PERFORMED ON TRANSMISSION. Read More »
GM: LOSS OF HIGH SPEED GMLAN COMMUNICATIONS, INTERMITTENT NO CRANK, IP GAGE FLUCTUATION, INTERMITTENT DOOR LOOK CYCLING, INTERMITTENT CHIME OPERATION, VARIOUS IP WARNING LAMPS ILLUMINATED, TRANSMISSION MAY NOT SHIFT, COMMUNICATION DTCS ... Read More »
CHEVROLET/GMC: THE 4WD FAILS TO ENGAGE WHEN SERVICE 4WD INDICATOR ILLUMINATES AND TRANSFER CASE CONTROL MODULE (TCCM) REPORTS POSSIBLE C0379 SET. MODELS 2012-2013 AVALANCHE, SILVERADO, SUBURBAN, TAHOE, SIERRA, YUKON, YUKON XL. Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THAT THE PART RESTRICTION FOR THE ACCESSORY DC POWER CONTROL MODULE AND THE SEAL KIT HAS ENDED. Read More »
GENERAL MOTORS: DUE TO LOOSE GROUND TERMINAL CONNECTIONS, IN SOME VEHICLES AND TRUCKS EXPERIENCE, ACCESSORIES MALFUNCTIONS, DIC MESSAGES, IPC WARNING INDICATORS, SES LIGHT ON. *PE Read More »
GENERAL MOTORS: ON SOME TRUCKS AND PASSENGER VEHICLES, ACCESSORY POWER OUTLETS (APO) AND TRAILER LIGHTING ARE COMMON ACCESSED ELECTRICAL SYSTEMS THAT ARE AFFECTED BY DEVICES THAT ARE PLUGGED IN AND BECOME INOPERATIVE DUE TO AN OPEN FUSE ... Read More »
CADILLAC/CHEVROLET/GMC: WILL HAVE INOPERATIVE CRUISE CONTROL; INOPERATIVE OR UNWANTED ACTIVATION OF RADIO CONTROLS; BACKLIGHTING FLASHES, FLICKERS OR INOPERATIVE DUE TO POSSIBLE SHORT TO GROUND ON STEERING WHEEL COIL CONNECTOR X2. Read More »
CHEVROLET/GMC: STARTER MOTOR, ON CERTAIN SUVS, MAY WEAR THRU, AFTER CONTACT, WIRING INSULATION, WHICH CAUSES CIRCUIT CONDITION TO SHORT OUT. STARTER MOTOR BECOMES INOPERATIVE. MODELS 2013 CHEVROLET AVALANCHE, SILVERADO AND GMC SIERRA. Read More »
GM: J-35616-64B TERMINAL TEST PROBE AND REPLACEMENT TERMINAL. ALSO INCLUDED MODELS VERANO, REGAL, LACROSSE, CTS, SRX, VOLT, SONIC, MALIBU, IMPALA, EQUINOX, CRUZE, AVALANCHE, TAHOE SUBURBAN, SILVERADO, SIERRA, YUKON, AND TERRAIN FOR ... Read More »
CADILLAC/CHEVROLET/GMC: LOSS OF PROPULSION, WHEN SPEED IS LESS THAN 5 KM/H (3MPH), SERVICE HYBRID SYSTEM IS DISPLAYED IN DRIVER INFORMATION CENTER (DIC) AND MALFUNCTION INDICATOR LAMP (MIL) ILLUMINATES. Read More »
GM-EXPRESS/SILVERADO/SAVANA/SIERRA: DUE TO POOR CONNECTIONS AND INTERMITTENT CONDITION OF MAP SENSOR CONNECTOR WIRING HARNESS TERMINAL CRIMPS, TRUCKS HAVE A MALFUNCTION INDICATOR LAMP (MIL) ILLUMINATION AND REDUCED ENGINE POWER DISPLAY ... Read More »
ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS
GENERAL MOTORS: ON SOME TRUCKS AND PASSENGER VEHICLES, ACCESSORY POWER OUTLETS (APO) AND TRAILER LIGHTING ARE COMMON ACCESSED ELECTRICAL SYSTEMS THAT ARE AFFECTED BY DEVICES THAT ARE PLUGGED IN AND BECOME INOPERATIVE DUE TO AN OPEN FUSE ... Read More »
CADILLAC/CHEVROLET/GMC: ON SOME VEHICLES AND/OR TRUCKS, INSTRUMENT CLUSTER WILL ILLUMINATE, AFTER AN OIL CHANGE, INDICATING LOW OIL PRESSURE AND/OR SES LAMP WILL ILLUMINATE. Read More »
THIS INFORMATIONAL BULLETIN PROVIDES INFORMATION ON EXTERIOR LIGHTING COMPONENTS THAT HAVE BEEN TINTED OR SMOKED BY AN OUTSIDE VENDOR AND GENERAL MOTORS POSITION ON ALTERING THESE COMPONENTS. Read More »
GENERAL MOTORS: SERVICE STABILITY MESSAGE LOW POWER BRAKE LIGHT AND CRUISE CONTROL OPERATION- DTC C0161 AND/OR C0277. NEW FOR THE 2012 MODELS IS A DUAL BRAKE PEDAL POSITION (BPP) SENSOR (TWO SENSORS IN ONE). Read More »
GENERAL MOTORS: THE WINDOWS, FRONT AND REAR, WOULD BIND, POOR FIT, MISALIGNMENT, MAKES RATTLE OR SQUEAKING NOISES, MOVES SLOWLY AND IS INOPERATIVE. MODEL 2008-2014 VEHICLES AND TRUCKS. Read More »
GM: DIAGNOSE AND REPAIR HVAC BLOWER FUNCTION. MAY NOT BE ANY AIR FLOW FROM THE HVAC VENTS. ONE POSSIBLE OF THIS CONDITION MAY BE THE CONTACTS IN THE HVAC JUNCTION BLOCK(S) LOCATED AT THE RIGHT SIDE OF THE INSTRUMENTAL PANEL. Read More »
CHEVROLET/GMC: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. ON CERTAIN MODEL VEHICLES, A CONDITION WHERE ROOF RAIL AIRBAGS, MAY BEEN IMPROPERLY ROUTED ON RIGHT SIDE, RESULTING IN DEPLOYMENT. Read More »
GM: AIR BAG WARNING LAMP ILLUMINATED, REPEAT HISTORY DTC B0083 0F- B0088 0F ON VEHICLES OPERATED IN AMARILLO TEXAS AREA. AN UPDATED SOFTWARE CALIBRATION HAS BEEN RELEASED TO ADDRESS THIS CONDITION. Read More »
CHEVROLET/GMC: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. ON CERTAIN MODEL VEHICLES, A CONDITION WHERE ROOF RAIL AIRBAGS, MAY BEEN IMPROPERLY ROUTED ON RIGHT SIDE, RESULTING IN DEPLOYMENT. Read More »
GENERAL MOTORS: THE WINDOWS, FRONT AND REAR, WOULD BIND, POOR FIT, MISALIGNMENT, MAKES RATTLE OR SQUEAKING NOISES, MOVES SLOWLY AND IS INOPERATIVE. MODEL 2008-2014 VEHICLES AND TRUCKS. Read More »
GMC/CHEVROLET: THE PASSENGER AND/OR DRIVER DOOR MODULE COURTESY LIGHTS CALIBRATIONS ARE THE SAME, WITH OR WITHOUT, DOOR PANEL COURTESY LIGHTS. MODEL 2007-2013 AVALANCHE, SILVERADO, SUBURBAN, TAHOE, SIERRA, YUKONS. Read More »
GM: THE FRONT OR REAR DOOR MAY NOT OPEN FROM THE INSIDE OR OUTSIDE HANDLE, THE DOOR WILL NOT UNLOCK WITH ANY METHOD. THE PROBABLY CAUSE AN INCORRECT INSTALLATION OF A HANDLE COMPONENT. *RM UPDATED ON 7/26/2013. Read More »
GENERAL MOTORS: SERVICE STABILITY MESSAGE LOW POWER BRAKE LIGHT AND CRUISE CONTROL OPERATION- DTC C0161 AND/OR C0277. NEW FOR THE 2012 MODELS IS A DUAL BRAKE PEDAL POSITION (BPP) SENSOR (TWO SENSORS IN ONE). Read More »
CADILLAC/GMC/CHEVROLET: INFORMATION ON CRUISE CONTROL BEING INOPERATIVE DUE TO BPP CIRCUIT SIGNAL AND/OR TCC/CRUISE BRAKE PEDAL PARAMETERS, WHEN BRAKE PEDAL IS RELEASED BUT SHOWS APPLIED. Read More »
GMC/CHEVROLET/CADILLAC: INSTRUMENT PANEL MESSAGES REGARDING STABILITRAK MESSAGE, TRACTION CONTROL MESSAGE, SERVICE BRAKE SYSTEM MESSAGE, IS OFF AND GAUGES, IN VARIOUS MODULES LOW SPEED SETTINGS, ARE INOPERATIVE. Read More »
GMC/CHEVROLET/CADILLAC: INSTRUMENT PANEL MESSAGES REGARDING STABILITRAK MESSAGE, TRACTION CONTROL MESSAGE, SERVICE BRAKE SYSTEM MESSAGE, IS OFF AND GAUGES, IN VARIOUS MODULES LOW SPEED SETTINGS, ARE INOPERATIVE. Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT FINDING NEEDLE BEARINGS DURING AN OIL CHANGE. TECHNICIAN WILL GAIN ACCESS TO THE ROLLER ROCKERS TO INSPECT THEM. Read More »
GM-EXPRESS/SILVERADO/SAVANA/SIERRA: DUE TO POOR CONNECTIONS AND INTERMITTENT CONDITION OF MAP SENSOR CONNECTOR WIRING HARNESS TERMINAL CRIMPS, TRUCKS HAVE A MALFUNCTION INDICATOR LAMP (MIL) ILLUMINATION AND REDUCED ENGINE POWER DISPLAY ... Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THAT THE PART RESTRICTION FOR THE ACCESSORY DC POWER CONTROL MODULE AND THE SEAL KIT HAS ENDED. Read More »
GMC/CADILLAC/CHEVROLET: HVAC SYSTEM, WHEN TURNED ON, IS VERY NOISY AND THERE IS A LACK OF AIRFLOW, THROUGH VENTS, DUE TO BLOWER MOTOR FAILING TO WORK PROPERLY. Read More »
