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Service bulletins for the 2003 Chevrolet Express

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.

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

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Bulletins, newest first
32382004-12-04. Service bulletin. ELECTRICAL SYSTEM:IGNITION. PRNDL LIGHT UP WITH KEY OUT OF IGNITION AND DOOR OPEN. *EH
30562004-11-17. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. CHECK ENGINE LIGHT WITH A P0300 DUE TO 2-4 CYLINDERS MISFIRING ON THE SAME BANK OF THE ENGINE. *TT
30442004-11-17. Service bulletin. EQUIPMENT. GENERATION 5 ONSTAR STEERING WHEEL CONTROL FUNCTION. *TT
30962004-11-05. Service bulletin. AIR BAGS. INTERMITTENT AIR BAG TELLTALE SETS A FALSE DIAGNOSTIC TROUBLE CODE OF B0083 AND OR B0084. *SC
30972004-11-05. Service bulletin. ENGINE AND ENGINE COOLING. OIL PAN OR OIL COOLER LINE LEAK. *SC
30242004-11-04. Service bulletin. ENGINE AND ENGINE COOLING. GEN III ENGINE COATED PISTON INFORMATION. *TC
30582004-10-15. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. GOODWRENCH ENGINE AND REPLACEMENT CRANKSHAFT INFORMATION. *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
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
3050A2004-10-13. Service bulletin. EQUIPMENT. 02-05 ONSTAR EQUIPPED VEHICLES EMITTING BEEPING NOISE BEFORE CONNECTING TO ONSTAR. *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
101620022004-10-01. Service bulletin. SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP. NOISE IN THE BRAKE PEDAL AFTER THE VEHICLE COMES TO A COMPLETE STOP MOST LIKELY OCCUR AFTER A HARD NON ABS STOP ON DRY PAVEMENT. *TT
101520022004-10-01. Service bulletin. FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY. FUEL FILL DIFFICULTIES, PREMATURE SHUTOFF OF THE FUEL NOZZLE. *TT
30482004-09-28. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS. TIMING CHAIN TENSIONER BREAKPOINTS FOR SERVICE KIT OR PRODUCTION KIT. SUPPLEMENT TO 03-06-01-024B. *TT
30512004-09-28. Service bulletin. VEHICLE SPEED CONTROL:CRUISE CONTROL. CRUISE CONTROL AND/OR THE POWER TAKE OFF UNIT (PTO) MAY BE INOPERATIVE. *TT
041520042004-09-17. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. GM IS ANNOUNCING A PRODUCT EMISSION RECALL, NUMBER 04016. VEHICLES COULD HAVE THE .02 ENGINE OFF NATURAL VACUUM, EONV, EVAPORATIVE EMISSION SYSTEM LEAK DETECTION DIAGNOSTIC DISABLED BY THE POWERTRAIN CONTROL MODULE THAT INCORRECTLY REFERENCES A FULL OR EMPTY FUEL TANK. POWERTRAIN CONTROL MODULE IS TO BE REPROGRAMMED. GM VOICEMAIL EXPRESS. *TT
3000A2004-08-25. Service bulletin. SUSPENSION:REAR. REAR AXLE LOCKING DIFFERENTIAL CHATTER SHUDDER NOISE ON TURNS. *MJ
30012004-08-25. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. THE SERVICE INFORMATION AND OWNERS MANUAL DO NOT SHOW A SERVICE INTERVAL FOR THE 8.6, 9.5, 9.75, 10.5, AND 11.5 INCH REAR AXLES WITH OR WITHOUT G80 (LOCKING DIFFERENTIAL). *TT 2006 ALL GENERAL MOTORS LIGHT DUTY TRUCKS, VANS AND UTILITIES. *TT
30182004-08-23. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ENGINE CYLINDER HEAD CUP PLUG COOLANT LEAK. *MJ
30022004-08-23. Service bulletin. POWER TRAIN. 4L60E/4L65E INTERMITTENT NEUTRAL CONDITION WHILE ACCELERATING FROM A STOP OR WHILE DRIVING. *TT 1999-2006 GM CARS, LIGHT DUTY TRUCKS AND UTILITIES. *TT
30242004-08-23. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. 4.8 5.3 6.0 GEN 111 ENGINE COATED PISTON INFORMATION. *MJ
30152004-08-23. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. 6.0L LQ4 VIN U ENGINE RESTRICTION. *TT
0406040092004-08-14. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. REDUCED POWER, INTERMITTENT HESITATION, STALL IN HIGH ALTITUDE/HIGH AMBIENT TEMPERATURES. *TT
0404950012004-08-12. Service bulletin. POWER TRAIN:DRIVELINE:DRIVESHAFT. REVISED WHEEL DRIVE SHAFT NUT TORQUE SPECIFICATION. *TT
00823A2004-07-19. Service bulletin. STEERING:HYDRAULIC POWER ASSIST:POWER STEERING FLUID. POWER STEERING FLUID LEAKING AT HYDRAULIC BRAKE BOOSTER. *TT

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