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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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By component

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Bulletins, newest first
30622004-10-15. Service bulletin. UNKNOWN OR OTHER. ADDITIONAL PART NUMBERS FOR BULLETIN 02-01-38-007B. *TT
30572004-10-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. ALLISON LCT1000 PUMP WHINE NOISE. *TT
30552004-10-14. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. SERVICE ENGINE SOON LIGHT WITH A P0300 MISFIRE DUE TO MISFIRES MAINLY ON CYLINDER 7. *TT
30542004-10-14. Service bulletin. POWER TRAIN. REPLACEMENT FLEXPLATE MAY HAVE LARGER BOLT HOLES THAN THE ORIGINAL FLEXPLATE. *TT
30572004-10-14. Service bulletin. STEERING. INTERMITTENT CONCERN OF THE SERVICE 4 WHEEL STEER MESSAGE BEING DISPLAYED ON THE DIC. *TT
30382004-10-14. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ENGINE TICK, RATTLE OR KNOCK NOISE AFTER CYLINDER HEAD GASKET REPLACEMENT ON THE 6.0L ENGINE. *TT
30392004-10-14. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. AUTO VOLUME INOPERATIVE AFTER IGNITION KEY IS CYCLED. VARIOUS MODELS INCLUDING 03-04 CADILLAC ALL FULL SIZE UTILITIES. *TT
30732004-10-13. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. 03-06-04-037 SUPPLEMENT - EVAP CANISTER INSTALLATION INFORMATION. *TT
3050A2004-10-13. Service bulletin. EQUIPMENT. 02-05 ONSTAR EQUIPPED VEHICLES EMITTING BEEPING NOISE BEFORE CONNECTING TO ONSTAR. *TT
30722004-10-13. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. THE ENGINE COOLANT TEMPERATURE OR INTAKE AIR TEMPERATURE SENSOR MAY READ -40 DEGREES WHEN MONITORED WITH TECH 2. *TT
30692004-10-13. Service bulletin. UNKNOWN OR OTHER. PAINT FOR THE 2003 GMT800 TRUCKS FOR CANADIAN DEPT. OF NATIONAL DEFENSE. *TT
30762004-10-08. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. REPEAT HVAC BLOWER MOTOR FAILURE. *TT
3075B2004-10-08. Service bulletin. ELECTRICAL SYSTEM. BLOWN MBEC 1 OR LBEC 1 FUSE. *TT
30732004-10-08. Service bulletin. VEHICLE SPEED CONTROL:CRUISE CONTROL. DOWNHILL CRUISE CONTROL SURGE. *TT
30892004-10-04. Service bulletin. ELECTRICAL SYSTEM. SERVICE ENGINE SOON LIGHT AND REDUCED ENGINE POWER WITH A DIAGNOSTIC TROUBLE CODE P1516. DIAGNOSTIC TROUBLE CODES P0120, P0220, P1514, P1515, P1518 AND P2135 MAY ALSO BE PRESENT. *TT
30892004-10-04. Service bulletin. STRUCTURE:BODY. RATTLE TYPE NOISE COMING FROM THE REAR OF THE CAB DURING BODY TWIST MANEUVERS OR OVER BUMPS. *TT
30872004-10-04. Service bulletin. FUEL SYSTEM, OTHER. UPDATED PART NUMBER FOR BULLETIN 04-08-49-019 STALL, INACCURATE/INCORRECT FUEL GAUGE READING. *TT
30872004-10-04. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. CRANK NO START WITH NO CRANKING RPM SPARK OR INJECTOR PULSE. *TT
30862004-10-04. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. WHISTLE NOISE FROM THE THROTTLE BODY AREA ON LIGHT THROTTLE ACCELERATION ON VEHICLES WITH GEN III ENGINES AND ELECTRONIC THROTTLE. *TT
30862004-10-04. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. AIR CONDITIONER (A/C) LOW PRESSURE SWITCH DIAGNOSTIC TOOL. CURRENTLY THE A/C LOW PRESSURE SWITCH OPEN/CLOSE PRESSURES CANNOT BE ACCURATELY DETERMINED BY MEASURING PRESSURE AT THE LOW SIDE SERVICE PORT. *TT
30832004-10-04. Service bulletin. POWER TRAIN. M74 ALLISON LCT1000 PTO GEAR APPLICATIONS. *TT
102220022004-10-02. Service bulletin. VISIBILITY:GLASS, SIDE/REAR. REAR QUARTER GLASS SERVICE REPLACEMENT KITS MAY HAVE DEFORMED SEALING STRIPED WHEN INITIALLY REMOVED FROM THEIR PACKAGING CAUSING DEALERS TO REORDER. *TT
102120022004-10-01. Service bulletin. SEATS. INFORMATION ON DIAGNOSTIC TROUBLE CODE 63 FOR PASSENGER SENSING SYSTEM THAT IS NOT CALIBRATED. *TT
102120022004-10-01. Service bulletin. VEHICLE SPEED CONTROL:ACCELERATOR PEDAL; SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES. BUZZ NOISE FELT IN THE ACCELERATOR PEDAL ON THE FIRST ACCELERATION AFTER STARTING THE VEHICLE. *TT
091620022004-10-01. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. LESS THAN DESIRABLE AC PERFORMANCE, ESPECIALLY WHEN THE AMBIENT TEMPERATURE IS ABOVE 90 DEGREES ON VEHICLES EQUIPPED WITH THE DURAMAX DIESEL ENGINE. *TT

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