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Service bulletins for the 2002 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.

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

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Bulletins, newest first
030601024A2003-12-02. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. RATTLE NOISE IN ENGINE. *TT
00149C2003-11-22. Service bulletin. ELECTRICAL SYSTEM. MALFUNCTION INDICATOR LAMP ON WITH A P0300 SET AND A MISFIRE. VARIOUS MODELS INCLUDING THE 1996-1999 P32 AND THE 1996-2002 GMC C/K TRUCK. *TT
014152003-11-22. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. CAM SENSOR CONNECTOR DOES NOT FIT SENSOR WHEN ENGINE IS REPLACED. *TT
014102003-11-22. Service bulletin. POWER TRAIN. POOR PERFORMANCE FROM A STOP IN 2WD, AUTO OR 4WD HI. 2003, 2003 CADILLAC EXT ALSO INCLUDED. *TT
014062003-11-22. Service bulletin. ELECTRICAL SYSTEM. 6.6L LB7 DURAMAX DIESEL DIAGNOSTIC TROUBLE CODES (DTCS) P0201-P0208. 2500 HD AND 3500 MODELS. *TT
00557B2003-11-21. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. THE ALLISON LCT1000 TRANSMISSIONS MAY EXPERIENCE A LEAK FROM OIL PUMP AREA. *TT
00938B2003-11-21. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). ALLISON LCT1000 REPEAT TRANSMISSION CONTROL MODULE (TCM) FAILURES WITH POSSIBLE MULTIPLE DIAGNOSTIC TROUBLE CODES (DTCS). *TT
014332003-11-21. Service bulletin. ELECTRICAL SYSTEM. 6.6L LB7 DURAMAX DIESEL DIAGNOSTIC TROUBLE CODE (DTC)S P0201 - P0208. 2500 HD AND 3500 MODELS. *TT
01129A2003-11-20. Service bulletin. POWER TRAIN. ALLISON LCT1000 SERVICEABILITY. *TT
00634A2003-11-20. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. GEN III ENGINE NOISE AFTER HOT SOAK RESTART. *TT
013612003-11-20. Service bulletin. ELECTRICAL SYSTEM. 6.6L LB7 ENGINE WITH DIAGNOSTIC TROUBLE CODE (DTC) P0201 AND P0208. 2500 HD AND 3500 MODELS. *TT
01349A2003-11-20. Service bulletin. FUEL SYSTEM, OTHER:FUEL INJECTION SYSTEM. 6.5L L49 L56 L57 L65 DIESEL ENGINE REQUIRING FUEL INJECTION PUMP REPLACEMENT. MODELS P32/P42 1994-1999 INCLUDED. *TT
00347A2003-11-20. Service bulletin. SUSPENSION:REAR:SPRINGS:LEAF SPRING ASSEMBLY:U-BOLT, LEAF SPRING TO AXLE. REAR SPRING SLAP OR CLUNK NOISE. *TT
013312003-11-19. Service bulletin. VEHICLE SPEED CONTROL. AGGRESSIVE THROTTLE RESPONSE. SERVICE VME. *TT
01139B2003-11-19. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. AIR CONDITIONING COMPRESSOR BELT OR TENSIONER JUMPS OR FLUTTERS CAUSING A RATTLE NOISE. SERVICE VME. *TT
013122003-11-18. Service bulletin. FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:FUEL RAIL. FUEL LEAK CONCERN FROM THE FUEL RAIL PRESSURE SENSOR. *TT
0804032003-11-05. Service bulletin. POWER TRAIN. THIS VME MESSAGE APPLIES TO THE VALVE BODY FOR THE ALLISON SERIES 1000 TRANSMISSION REVISED FOR THE 2004 MODEL YEAR TO ADD MODULATED MAIN PRESSURE CONTROL. THIS REVISION WILL PROVIDE ADDITIONAL TRANSMISSION OIL COOLER FLOW AND REDUCE PUMP LOAD DURING CERTAIN LOW SPEED OPERATING CONDITIONS. *TT
0715032003-10-31. Service bulletin. STRUCTURE:BODY. REVISED REQUIREMENTS FOR INSTALLING THE RUNNING BOARD. *TT
0308440112003-10-02. Service bulletin. STRUCTURE:BODY. TWEETER SPEAKER RATTLE IN FRONT SIDE DOOR(S), TWEETER SPEAKER FALLS OUT OF POSITION. *TT
020605003C2003-10-01. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. EXHAUST MOAN/VIBRATION. *TT UPDATE. *TT
030602005A2003-09-29. Service bulletin. ENGINE AND ENGINE COOLING. ENGINE COOLANT LOSS WITH NO VISIBLE LEAKS. *TT UPDATED *EH
0304180032003-09-27. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. REVISED WHEEL DRIVE SHAFT INNER JOINT AND SEAL REPLACEMENT. *TT
0303080022003-09-27. Service bulletin. SUSPENSION. RATTLE/SQUEAK FROM FRONT OF VEHICLE. *TT *AR
020601010A2003-09-26. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS. SERPENTINE BELT IDENTIFICATION AND DIAGNOSIS FOR MEDIUM DUTY TRUCKS. VARIOUS MODELS INCLUDING THE CHEVROLET AND GMC C5500 MD 2003. *TT
020138007A2003-09-26. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. POOR AIR CONDITIONER PERFORMANCE - AIR CONDITIONER WILL NOT BLOW COLD ENOUGH. *TT *AR

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