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Service bulletins for the 2011 GMC Sierra

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

2203 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Transmission and driveline are shown. Show all

Bulletins, newest first
08-07-30-021G2012-04-28. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). 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 U0073, U0100, U0101, U0102 U0121 OR U0140 SET (REPAIR TERMINALS IN TRANSMISSION HARNESS CONNECTOR, REPAIR OPEN OR SHORTED GM HIGH SPEED LAN CIRCUITS, OPEN OR SHORTED DATA LINK RESISTOR, CORROSION OR POOR CONNECTIONS IN VARIOUS CONTROL MODULE CONNECTORS). *JS
PIE-02082012-04-18. Service bulletin. POWER TRAIN:DRIVELINE:UNIVERSAL JOINT. CHEVROLET/GMC: IN THE REAR OF VEHICLE, A SQUEAKING NOISE IS HEARD AND ENGINEERING NEED TO GATHER INFORMATION, PRIOR TO REPAIR, TO DETERMINE ROOT CAUSE OF CONDITION. *PE
PIP-3366-B2012-02-29. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. 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. *PE
PI-06152012-02-07. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). GMC/CHEVROLET: BULLETIN PROVIDES INFORMATION ON THE SEAL REVISION AND THE TRANSFER CASE OUTPUT SHAFT SLINGER FOR CERTAIN MODEL YEAR TRUCKS. *PE
PI-0041D2011-12-05. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. CADILLAC/CHEVROLET/GMC: CERTAIN MODEL VEHICLES MY 2010-2012, THE TRANSMISSION HAS DEVELOPED A LEAK IN THE REAR. *PE
PI-04882011-08-01. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). 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
PI-03232011-06-08. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. GM: SLOW OR BUMPY SHIFTING INTO DRIVE. THERE MAY ALSO BE SHIFT FLARES ARE HARSH SHIFTS. THERE IS A CALIBRATION PROBLEM. *RM
PI-03202011-06-07. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN:MANUAL TRANSMISSION. GM: THERE ARE COMPLAINTS OF CERTAIN GEARS NOT WORKING OR NO REVERSE. THERE IS ALSO A POSSIBILITY OF TWO INTERNAL TROUBLE CODES. *RM
PI-03392011-06-06. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. GM: MULTIPLE WARNING LIGHTS MAY BE ILLUMINATED AND MULTIPLE TROUBLE CODES. THE TRANSMISSION MIGHT NOT SHIFT. *RM UPDATED 8/1/11. *PE MODELS 2011-2013 SILVERADO 2500HD, 3500HD; SIERRA 2500HD, 3500HD. UPDATED 12/5/12. *PE
PIP-4831B2011-05-25. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. GM: MALFUNCTION LIGHT IS ON AND THE TRANSMISSION MAY NOT SHIFT CORRECTLY. *RM
PI-03102011-05-23. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. 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. *PE *PE
PI-02982011-05-23. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION. GM: WHEN DRIVING UPHILL THE TRANSMISSION MAY NOT SHIFT OUT OF FIRST OR WILL SLIP INTO SECOND GEAR DUE TO A TORN CLUTCH SEAL. THERE MAY BE TWO INTERNAL TROUBLE CODES STORED. *RM
PIE-01242011-05-18. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. GM: THERE IS A TRANSMISSION FUEL LEAK FROM THE OIL PUMP AREA. *RM
PIP-48172011-03-28. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; ELECTRICAL SYSTEM:WIRING. CADILLAC/CHEVROLET/GMC: (HYBRID) INFORMATION ON INTERNAL TRANSMISSION WIRING HARNESS REPAIRS. DIAGNOSTICS OF ANY ONE OF OR COMBINATION OF THE DTCS LISTED MAY LEAD TO A INTERNAL TRANSMISSION WIRING HARNESS CONCERN. TRANSMISSIONWIRING HARNESS IS FOUND TO BE ROOT CAUSE OF ANY ONE OF THE LISTED DTCS. DO NOT ATTEMPT TO REPAIR THE INTERNAL TRANSMISSION WIRING HARNESS. *PE

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.