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Service bulletins for the 2003 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.

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

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Bulletins, newest first
01485A2004-02-27. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. TIMING CHAIN TENSIONER BREAKPOINTS FOR SERVICE KIT OR PRODUCTION FIX FOR VEHICLE EXHIBITING RATTLE-TYPE NOISE COMING FROM THE ENGINE AT APPROXIMATELY 1800 TO 2200 RPMS. SIT BULLETIN 1408407. *TT
00908D2004-02-27. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION. 6.6L AND MANUAL TRANSMISSION GROWL NOISE WHILE ENGAGING OR DISENGAGING CLUTCH. *TT *MJ
015922004-02-27. Service bulletin. ELECTRICAL SYSTEM. 2003-2004 GENERATION 5 ONSTAR STEERING WHEEL CONTROL FUNCTION EXPLANATION. SIT BULLETIN 1416474. *TT
015682004-02-25. Service bulletin. FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY. HARD TO FILL FUEL TANK AT HIGH VOLUME DIESEL PUMPS. SIT BULLETIN 1411583. *TT
015672004-02-25. Service bulletin. STEERING. QUADRASTEER SERVICE UPDATE. SIT BULLETIN 1411394. *TT
015642004-02-25. Service bulletin. VISIBILITY:REARVIEW MIRRORS/DEVICES:INTERIOR. INSIDE REARVIEW MIRROR COMPASS INOPERATIVE. SERVICE VME. SIT BULLETIN 1411219. *TT
015622004-02-25. Service bulletin. EQUIPMENT:ELECTRICAL. HVAC DIGITAL DISPLAY DOES NOT ILLUMINATE OR FUNCTION. SERVICE VME. SIT BULLETIN 1411066. *TT
015552004-02-25. Service bulletin. SUSPENSION. D HEIGHT SPECIFICATION MISSING FROM SI. SIT BULLETIN 1410632. *TT
030632004-02-24. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. 03063 - OBD SYSTEM SOFTWARE UPGRADE - ON-BOARD DIAGNOSTIC (OBD) SYSTEM SOFTWARE UPGRADE - DIAGNOSTIC TROUBLE CODE (DTC) P0128 ENGINE COOLANT TEMPERATURE BELOW THERMOSTAT REGULATING TEMPERATURE. *TT
0306040652004-02-11. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. LACK OF PASSENGER COMPARTMENT HEAT AND/OR RAISED/ROUGH IDLE AFTER START AND/OR P0128 DIAGNOSTIC TROUBLE CODE (DTC) STORED WITH NO SERVICE ENGINE SOON LIGHT ILLUMINATED. *TT
0303090022004-02-11. Service bulletin. SUSPENSION:REAR:SPRINGS:LEAF SPRING ASSEMBLY; SUSPENSION. REAR LEAF SPRING SLAP OR CLUNK NOISE (REPLACE SPRING INSERTS) *TT UPDATED 10/18/07. *NJ
030730037B2004-02-11. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. TRANSMISSION OIL LEAK, ABNORMAL KNOCKING NOISE HEARD AT IDLE. *TT
010730038B2004-02-10. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. THE SERVICE ENGINE SOON LAMP IS ILLUMINATED, NO 3RD AND 4TH GEAR, THE TRANSMISSION DOES NOT SHIFT CORRECTLY, THE TRANSMISSION FEELS LIKE IT SHIFTS TO NEUTRAL OR A LOSS OF DRIVE OCCURS. *TT
0116032004-01-30. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). CONCERNS WITH THE SERVICE FOUR-WHEEL DRIVE LIGHT OR THE FOUR-WHEEL DRIVE IS INOPERATIVE WITH A C0327 CODE STORED IN THE TCCM. GM VOICEMAIL EXPRESS. *TT
1009032004-01-22. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. DURAMAX DIESEL FUEL IN OIL DIAGNOSTICS REVISITED. GM VOICEMAIL LOG. THIS INCLUDES C4500 AND 5500 TRUCKS. *TT
1008032004-01-22. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. EXCESSIVE DURAMAX TURBOCHARGER WHINE NOISE OR POSSIBLY A PERFORMANCE OR A FUEL ECONOMY COMPLAINT. GM VOICEMAIL LOG. THIS INCLUDES 2003-2004 4500 AND 5500 TRUCKS. *TT
1008032004-01-22. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. THE ENGINE DIAGNOSTIC FUEL LEAKS INSIDE OF THE ENGINE. GM VOICEMAIL LOG. THIS INCLUDES 2000 - 2004 CHEVROAND GMC C4500 AND 5500 TRUCKS. *TT
0306040592004-01-07. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. REVISED FUEL LEAKS INSIDE OF ENGINE DIAGNOSTIC. 2004 CHEVROLET KODIAK AND GMC TOPKICK ALSO INCLUDED. *TT
030234001A2004-01-07. Service bulletin. STEERING:LINKAGES:TIE ROD ASSEMBLY. INNER TIE ROD RELEASED FOR SERVICE. *TT
0307300532004-01-05. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. ALLISON AUTOMATIC TRANSMISSION VALVE BODY HARDWARE CHANGES. *TT
0307300542004-01-05. Service bulletin. POWER TRAIN. TRANSMISSION FLUID LEAKS OUT OF VENT WHEN TRUCK IS STARTED AFTER A COLD SOAK. *TT
020601022C2004-01-05. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. INFORMATION ON ENGINE TICKING. INCLUDING 2004 CHEVROLET KODIAK C45/C5500 SERIES AND 2004 GMC TOPKICK C4500/C5500 SERIES. *TT UPDATE. *TT
0306040602004-01-03. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. INFORMATION ON NEW SPARK PLUGS AND GAPPING. VARIOUS MODELS INCLUDING PONTIAC GTO 2004. *TT
030419001A2004-01-02. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. USE OF SYNTHETIC FRONT AXLE LUBRICANT FOR 4WD VEHICLES SOLD IN COLD WEATHER CLIMATES. *TT THIS BULLETIN REPLACED PREVIOUS BULLETIN DATED 10/01/2003. *TT
000235003C2004-01-02. Service bulletin. STEERING. CLUNKING NOISE UNDER HOOD AND CAN BE FELT IN THE STEERING WHEEL. *TT

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