Technical Service Bulletins (TSBs) for the 2012 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 PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT ADDING STEERING STABILIZER SHOCK. A STEERING STABILIZER IS LISTED IN THE PARTS CATALOG GROUP 6. Read More »
"THIS TECHNICAL BULLETIN PROVIDES A PROCEDURE TO INSPECT THE STEERING GEAR FOR A NORMAL CONDITION OF GREASE OR SEALANT ON EXTERIOR CASE OF GEAR DUE TO THE MANUFACTURING PROCESS." Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN WITH THE STEPS TO DIAGNOSIS AND REPAIR VEHICLES WITH VARIOUS HANDLING, VEHICLE DYNAMICS CONCERNS, NOISES FROM THE SUSPENSION OR UNDERBODY, OR ISSUES RELATED ... Read More »
12050C - CUSTOMER SATISFACTION PROGRAM (REVISED EXPIRATION DATE, EXTENDED TO 4/30/16). CERTAIN 2011-2012 MODEL YEAR CHEVROLET EXPRESS AND GMC SAVANA VEHICLES, AND CHEVROLET SILVERADO AND SUBURBAN, AND GMC SIERRA AND YUKON XL 2500 SERIES ... Read More »
GMC/CHEVROLET: DUE TO A POSSIBLE CRACKED OR BROKEN, THE HUB RETAINING NUT, THE REAR AXLE MAY LEAK FLUID. *PE MODELS 2011-2012 SILVERADO HD 2500 AND 3500, SIERRA HD 2500 AND 3500. UPDATED 11/28/12. Read More »
THIS INFORMATIONAL BULLETIN PROVIDES INFORMATION TO GM DEALERS ON THE CORRECT CLEANING METHODS WHEN CLEANING ENGINE GASKET SEALING SURFACES. Read More »
CONDITION Certain 2010-2016 model year Chevrolet Express, GMC Savana, 2011-2013 model year Chevrolet Silverado HD, 2015-2016 model year Chevrolet Silverado HD, 2011-2012 model year GMC Sierra HD, 2015 model year GMC Sierra HD ... Read More »
15114 - SPECIAL COVERAGE. ON SOME 2010-2012 MODEL YEAR CHEVROLET SILVERADO HD AND GMC SIERRA HD OR 2011-2012 CHEVROLET EXPRESS AND GMC SIERRA HD VEHICLES EQUIPPED WITH A 6. Read More »
14652 - SPECIAL COVERAGE. ON SOME 2010-2012 MODEL YEAR CHEVROLET EXPRESS AND GMC SAVANA VEHICLES AND 2011-2012 MODEL YEAR CHEVROLET SILVERADO HD AND GMC SIERRA HD VEHICLES THAT ARE EQUIPPED WITH A 6. Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN THAT SOME VEHICLES MAY HAVE A SERVICE ENGINE SOON LAMP, ENGINE MISFIRE ON CYLINDER 1, 4, 6, OR 7 AND/OR TICK NOISE. Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT VEHICLES THAT MAY HAVE LOW OIL PRESSURE MESSAGE. TECHNICIAN MAY ALSO FIND A DIAGNOSTIC TROUBLE CODE P0521 IN THE ENGINE CONTROL MODULE. Read More »
THIS INFORMATIONAL BULLETIN EXPLAINS A POSSIBLE NORMAL WHINING NOISE FROM THE BALANCE SHAFT CHAIN IF THE VEHICLE HAS LESS THAN 10,000 MILES ON IT. Read More »
THIS INFORMATIONAL BULLETIN EXPLAINS THE USE OF DIESEL FUEL ADDITIVES IN AN ENGINE, ARE NOT REQUIRED UNLESS THE CUSTOMER DESIRES ADDITIVES TO PREVENT FUEL CONCERNS DEPENDING ON FUEL OR TEMPERATURE RELATED CONDITIONS. Read More »
THIS INFORMATIONAL BULLETIN IS A SUPPLEMENT TO THE DURAMAX DIESEL COOLANT SYSTEM FILL AND HEAD GASKET REPLACEMENT PROCEDURE FOUND IN THE SERVICE INFORMATION. Read More »
15801 ? CUSTOMER SATISFACTION PROGRAM. VEHICLES EQUIPPED WITH THE DURAMAX DIESEL ENGINE OPTION AND THE AMBULANCE UPFITTER OR FIRE TRUCK UPFITTER OPTION MAY HAVE A CONDITION IN WHICH THE EMISSION CONTROL SYSTEM AS DESIGNED WILL LIMIT ... Read More »
GM: THE FUEL TEMPERATURE SENSOR CONTACTS THE FUEL RETURN PIPE AFTER PUMP REPLACEMENT. INCLUDES MAKE: CHEVROLET AND GMC. MODELS: SILVERADO 2500/3500 AND SIERRA 2500/3500. MODEL YEARS 2012-2014. Read More »
14653 - SPECIAL COVERAGE. SOME 2010-2014 MODEL YEAR CHEVROLET EXPRESS, 2011-2014 MODEL YEAR CHEVROLET SILVERADO HD, 2010-2014 MODEL YEAR GMC SAVANA AND 2011-2014 MODEL YEAR GMC SIERRA HD VEHICLES EQUIPPED WITH A 6. Read More »
CHEVROLET/BUICK/GMC/CADILLAC: FUEL GAUGE HAS AN INCORRECT READING AFTER FILLING OR FUEL LEVEL SLOW TO REGISTER OR DISPLAY AFTER VEHICLE HAS STARTED. *PE Read More »
THIS PRELIMINARY INFORMATIONAL BULLETIN PROVIDES A PROCEDURE TO REPLACE A TERMINAL FOR COMMENTS REGARDING INSTRUMENT PANEL CLUSTER (IPC) WARNING LAMPS AND/OR MIL ARE ILLUMINATED, DIESEL EXHAUST FLUID (DEF) MESSAGE DISPLAYED, VARIOUS DTCS ... Read More »
14043 - CUSTOMER SATISFACTION. CERTAIN VEHICLES, EQUIPPED WITH AN ALLISON 6-SPEED AUTOMATIC TRANSMISSION (MW7), MAY HAVE BEEN BUILT WITH AN INCORRECT TRANSMISSION THRUST BEARING. Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN THAT SOME VEHICLES MAY HAVE A SERVICE ENGINE SOON LAMP, ENGINE MISFIRE ON CYLINDER 1, 4, 6, OR 7 AND/OR TICK NOISE. Read More »
14043 - CUSTOMER SATISFACTION. CERTAIN VEHICLES, EQUIPPED WITH AN ALLISON 6-SPEED AUTOMATIC TRANSMISSION (MW7), MAY HAVE BEEN BUILT WITH AN INCORRECT TRANSMISSION THRUST BEARING. 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 »
POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
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 »
THIS TECHNICAL BULLETIN PROVIDES A PROCEDURE TO CHECK THE CYLINDERS FOR DAMAGED PISTONS AND DETERMINE IF THE USE OF AFTERMARKET CALIBRATIONS OR PERFORMANCE PARTS MAY BE THE CAUSE. Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT THE USE OF J-35616-64B TERMINAL TEST PROBE, REPLACEMENT TERMINALS, AND TERMINATED LEADS. Read More »
THIS TECHNICAL BULLETIN PROVIDES A PROCEDURE TO REMOVE THE TRANSPORT MODE ON MESSAGE DISPLAYED IN THE DIC DUE TO VEHICLES SHIPPED OVER LONG DISTANCES OUTSIDE THE U.S. AND CANADA. Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THAT ,WHEN TESTING ANY CIRCUIT FOR OPEN OR RESISTANCE, IT IS IMPERATIVE THAT ALL RELATED TERMINAL PIN FIT AND TENSION BE CHECKED WHEN THE TEST STEPS REQUIRE DISCONNECTION ... Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN IF UNABLE TO PLACE AN ONSTAR CALL IN THE IGNITION ON MODE AFTER THE ONSTAR CANADA UPGRADE, TO CONTACT THE GM TECHNICAL ASSISTANCE CENTER ONSTAR GROUP FOR FURTHER ASSISTANCE. Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN ON THE STEPS TO DIAGNOSE THE CONCERN, AND THE STEPS TO REPAIR THE CONCERN OF THE VEHICLE CRANKS BUT DOES NOT START. Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO HELP THE DEALERSHIP TECHNICIANS PERFORM A PARASITIC DRAIN TEST FOR THE ONSTAR MODULE. Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO HELP THE DEALERSHIP TECHNICIANS PERFORM A PARASITIC DRAIN TEST FOR THE ONSTAR MODULE. Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN, IF UNABLE TO PLACE AN ONSTAR CALL IN THE IGNITION ON MODE AFTER THE ONSTAR CANADA UPGRADE TO CONTACT THE GM TECHNICAL ASSISTANCE CENTER ONSTAR GROUP FOR FURTHER ASSISTANCE. Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THE STEPS ON DIAGNOSING THE CONCERN. VEHICLE'S SUNROOF OPERATION INTERMITTENT, BIND, NOISE, AUTO-REVERSE, AND/OR WATER LEAKS. Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THAT THE DRIVE MOTOR GENERATOR CONTROL MODULE AND ACCESSORY POWER MODULE ARE BEING PLACED ON RESTRICTION THROUGH THE GENERAL MOTORS TECHNICAL ASSISTANCE CENTER. 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 »
THIS PRELIMINARY INFORMATIONAL BULLETIN PROVIDES A PROCEDURE TO REPLACE A TERMINAL FOR COMMENTS REGARDING INSTRUMENT PANEL CLUSTER (IPC) WARNING LAMPS AND/OR MIL ARE ILLUMINATED, DIESEL EXHAUST FLUID (DEF) MESSAGE DISPLAYED, VARIOUS DTCS ... Read More »
THIS PRELIMINARY INFORMATIONAL BULLETIN PROVIDES A LIST OF CORRECTIONS FOR MULTIPLE CONCERNS REGARDING UNEXPECTED LOSS OF RADIO AUDIO (RADIO GOES SILENT/NO SOUND) AND OTHER BLACKBERRY PHONE - BLUETOOTH ... Read More »
THIS INFORMATIONAL BULLETIN PROVIDES INFORMATION THAT MAY BE USEFUL ON DIAGNOSING BATTERIES THAT HAVE SET FOR A LONG PERIOD OF TIME AND/OR SET IN COLD WEATHER CLIMATES AND TESTING THOSE BATTERIES. Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO HELP THE DEALERSHIP TECHNICIANS PERFORM A PARASITIC DRAIN TEST FOR THE ONSTAR MODULE. Read More »
THIS WARRANTY ADMINISTRATION BULLETIN PROVIDE POLICY INFORMATION ON USING THE EL-50313 MIDTRONICS GR8 BATTERY TESTER/CHARGER FOR DIAGNOSING BATTERY REPLACEMENTS AND MAINTAINING BATTERIES ON NEW VEHICLES IN DEALER INVENTORY. Read More »
15114 - SPECIAL COVERAGE. ON SOME 2010-2012 MODEL YEAR CHEVROLET SILVERADO HD AND GMC SIERRA HD OR 2011-2012 CHEVROLET EXPRESS AND GMC SIERRA HD VEHICLES EQUIPPED WITH A 6. 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 »
CONDITION Certain 2010-2016 model year Chevrolet Express, GMC Savana, 2011-2013 model year Chevrolet Silverado HD, 2015-2016 model year Chevrolet Silverado HD, 2011-2012 model year GMC Sierra HD, 2015 model year GMC Sierra HD ... Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THE STEPS ON DIAGNOSING THE CONCERN. VEHICLE'S SUNROOF OPERATION INTERMITTENT, BIND, NOISE, AUTO-REVERSE, AND/OR WATER LEAKS. Read More »
THIS INFORMATIONAL BULLETIN PROVIDES INFORMATION ON A NORMAL CONDITION ON TEMPERED GLASS OF SPOTS SHOWING ON THE REAR AND SIDE WINDOWS WHEN THE VEHICLE IS IN THE SUNLIGHT. 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 »
THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THE STEPS ON DIAGNOSING THE CONCERN. VEHICLE'S SUNROOF OPERATION INTERMITTENT, BIND, NOISE, AUTO-REVERSE, AND/OR WATER LEAKS. Read More »
THIS PRELIMINARY INFORMATIONAL BULLETIN PROVIDES A PROCEDURE FOR RELEARNING THE POWER FOLDING MIRRIORS AND ROAD TESTIN TO VERIFY THEY CORRECT A CONDTION OF THE POWER FOLDING MIRRIORS GLASS SHAKES, FLUTTERS AT NORMAL DRIVING CONDITIONS. Read More »
THIS PRELIMINARY INFORMATIONAL BULLETIN PROVIDES A PROCEDURE TO REPOSITION THE FRONT SEAT BELT LATCH PLATE FOR CONCERNS REGARDING THE SEAT BELT WEBBING OR LATCH PLATE COMING TWISTED. Read More »
THIS PRELIMINARY INFORMATIONAL BULLETIN PROVIDES A PROCEDURE FOR RELEARNING THE POWER FOLDING MIRRIORS AND ROAD TESTIN TO VERIFY THEY CORRECT A CONDTION OF THE POWER FOLDING MIRRIORS GLASS SHAKES, FLUTTERS AT NORMAL DRIVING CONDITIONS. Read More »
THIS PRELIMINARY INFORMATIONAL BULLETIN PROVIDES INFORMATION THAT MAY BE HELPFUL WHEN ADDRESSING UNDERBODY COMPONENT CORROSION WITH CUSTOMERS. Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THE STEPS ON DIAGNOSING THE CONCERN. VEHICLE'S SUNROOF OPERATION INTERMITTENT, BIND, NOISE, AUTO-REVERSE, AND/OR WATER LEAKS. 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 »
THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THIS VIBRATION OR GROWL NOISE CAN BE DIFFICULT TO DIAGNOSE AND USING THE PICO SCOPE IS RECOMMENDED FOR DIAGNOSING THIS CONCERN. Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THIS VIBRATION OR GROWL NOISE CAN BE DIFFICULT TO DIAGNOSE AND USING THE PICO SCOPE IS RECOMMENDED FOR DIAGNOSING THIS CONCERN. Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT ADDING STEERING STABILIZER SHOCK. A STEERING STABILIZER IS LISTED IN THE PARTS CATALOG GROUP 6. Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THAT A NOISE OR A VIBRATION IN THE VEHICLE THAT SEEMS TO BE ABNORMAL MAY NOT HAVE BEEN THERE WHEN THE VEHICLE WAS PURCHASED. Read More »
15801 ? CUSTOMER SATISFACTION PROGRAM. VEHICLES EQUIPPED WITH THE DURAMAX DIESEL ENGINE OPTION AND THE AMBULANCE UPFITTER OR FIRE TRUCK UPFITTER OPTION MAY HAVE A CONDITION IN WHICH THE EMISSION CONTROL SYSTEM AS DESIGNED WILL LIMIT ... Read More »
THIS PRELIMINARY INFORMATIONAL BULLETIN PROVIDES INFORMATION THAT MAY BE HELPFUL WHEN ADDRESSING UNDERBODY COMPONENT CORROSION WITH CUSTOMERS. Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THE STEPS ON DIAGNOSING THE CONCERN. VEHICLE'S SUNROOF OPERATION INTERMITTENT, BIND, NOISE, AUTO-REVERSE, AND/OR WATER LEAKS. Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THAT THE DRIVE MOTOR GENERATOR CONTROL MODULE AND ACCESSORY POWER MODULE ARE BEING PLACED ON RESTRICTION THROUGH THE GENERAL MOTORS TECHNICAL ASSISTANCE CENTER. Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THE DIESEL OXIDATION CONVERTER PART RESTRICTION HAS ENDED. DEALER CAN NOW ORDER THE PARTS THROUGH THE REGULAR CUSTOMER CARE AND AFTERSALES PARTS PROCESS. Read More »
12050B - CUSTOMER SATISFACTION (REVISED EXPIRATION DATE). CERTAIN VEHICLES, ALL EQUIPPED WITH A 10.5" REAR AXLE, MAY HAVE A CONDITION IN WHICH THE REAR AXLE RIGHT-HAND SIDE BEARING ADJUSTER CLIP AND BOLT MAY COME LOOSE WITHIN THE REAR ... Read More »
THIS PRELIMINARY INFORMATIONAL BULLETIN PROVIDES A PROCEDURE FOR RELEARNING THE POWER FOLDING MIRRIORS AND ROAD TESTIN TO VERIFY THEY CORRECT A CONDTION OF THE POWER FOLDING MIRRIORS GLASS SHAKES, FLUTTERS AT NORMAL DRIVING CONDITIONS. Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN TO DIAGNOSE THE CONCERN AND THE STEPS TO REPAIR THE CONCERN. THE VEHICLE'S XM TRAVEL LINK MAY BE INOPERTIVE. Read More »
THIS TECHNICAL BULLETIN PROVIDES A PROCEDURE TO REPROGRAM THE MEDIA DISC PLAYER WITH THE LATEST CALIBRATIONS TO CORRECT A CONDITION OF THE REAR ENTERTAINMENT SYSTEM NOT OPERATING AS INTENDED IN COLDER AMBIENT TEMPERATURE AREAS DUE TO ... Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN ON THE STEPS TO DIAGNOSE AND REPAIR THE CONCERN. THE VEHICLE'S XM RADIO ONLY HAS XM PREVEIW CHANNELS. Read More »
"THIS TECHNICAL BULLETIN PROVIDES A PROCEDURE TO CONTACT ONSTAR FOR HARD MUTE REQUEST TO CORRECT A CUSTOMER CONCERN WHEN THE RADIO IS ON, IT DOES NOT MUTE ENOUGH WHEN THE ONSTAR? TURN-BY-TURN NAVIGATION DIRECTIONS ARE ANNOUNCED DUE TO ... Read More »
THIS PRELIMINARY INFORMATIONAL BULLETIN PROVIDES A LIST OF CORRECTIONS FOR MULTIPLE CONCERNS REGARDING UNEXPECTED LOSS OF RADIO AUDIO (RADIO GOES SILENT/NO SOUND) AND OTHER BLACKBERRY PHONE - BLUETOOTH ... Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN ON THE STEPS TO DIAGNOSE AND REPAIR THE CONCERN OF RECEIVING FREQUENT "OFF ROUTE" MESSAGES WHILE FOLLOWING TURN BY TURN (TBT) ROUTE NAVIGATION. Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN ON THE STEPS TO DIAGNOSE AND REPAIR THE CONCERN OF RECEIVING FREQUENT "OFF ROUTE" MESSAGES WHILE FOLLOWING TURN BY TURN (TBT) ROUTE NAVIGATION. Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN IF UNABLE TO PLACE AN ONSTAR CALL IN THE IGNITION ON MODE AFTER THE ONSTAR CANADA UPGRADE, TO CONTACT THE GM TECHNICAL ASSISTANCE CENTER ONSTAR GROUP FOR FURTHER ASSISTANCE. Read More »
"THIS TECHNICAL BULLETIN PROVIDES A PROCEDURE TO CONTACT ONSTAR FOR HARD MUTE REQUEST TO CORRECT A CUSTOMER CONCERN WHEN THE RADIO IS ON, IT DOES NOT MUTE ENOUGH WHEN THE ONSTAR? TURN-BY-TURN NAVIGATION DIRECTIONS ARE ANNOUNCED DUE TO ... Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN ON THE STEPS FOR DIAGNOSING THE CONCERN. THE VEHICLE MAY BE UNABLE TO CONNECT TO ONSTAR USING THE WHITE, BLUE OR RED ONSTAR BUTTONS. Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN, IF UNABLE TO PLACE AN ONSTAR CALL IN THE IGNITION ON MODE AFTER THE ONSTAR CANADA UPGRADE TO CONTACT THE GM TECHNICAL ASSISTANCE CENTER ONSTAR GROUP FOR FURTHER ASSISTANCE. Read More »
THIS WARRANTY ADMINISTRATION BULLETIN PROVIDE POLICY ON PERFORMING GM COVERED VEHICLE SERVICES AND MAINTENANCE ON VEHICLES ORIGINATING/SOLD IN CANADA. Read More »
THIS INFORMATIONAL BULLETIN IS A SUPPLEMENT TO THE DURAMAX DIESEL COOLANT SYSTEM FILL AND HEAD GASKET REPLACEMENT PROCEDURE FOUND IN THE SERVICE INFORMATION. Read More »
THIS WARRANTY ADMINISTRATION BULLETIN PROVIDE POLICY INFORMATION ON USING THE EL-50313 MIDTRONICS GR8 BATTERY TESTER/CHARGER FOR DIAGNOSING BATTERY REPLACEMENTS AND MAINTAINING BATTERIES ON NEW VEHICLES IN DEALER INVENTORY. Read More »
THIS WARRANTY ADMINISTRATION BULLETIN PROVIDES INFORMATION ON GM?S POLICY ON PERFORMING GM COVERED VEHICLE SERVICES AND MAINTENANCE ON VEHICLES ORIGINATING/SOLD IN CANADA. Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THAT A NOISE OR A VIBRATION IN THE VEHICLE THAT SEEMS TO BE ABNORMAL MAY NOT HAVE BEEN THERE WHEN THE VEHICLE WAS PURCHASED. Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THAT THE DRIVE MOTOR GENERATOR CONTROL MODULE AND ACCESSORY POWER MODULE ARE BEING PLACED ON RESTRICTION THROUGH THE GENERAL MOTORS TECHNICAL ASSISTANCE CENTER. Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN THAT SOME VEHICLES MAY HAVE A SERVICE ENGINE SOON LAMP, ENGINE MISFIRE ON CYLINDER 1, 4, 6, OR 7 AND/OR TICK NOISE. Read More »
THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT VEHICLES THAT MAY HAVE AN OUTSIDE AIR TEMPERATURE INOPERATIVE. Read More »
