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Service bulletins for the 2003 GMC Savana

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.

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

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Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
0406040502005-02-14. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. CNG FUEL LEVEL READS HIGHER THAN ACTUAL, INACCURATE FUEL LEVEL READING, MALFUNCTION INDICATOR LAMP (MIL) ILLUMINATED. *TT
0406040492005-02-14. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. FALSE START WITH MALFUNCTION INDICATOR LAMP LIGHT ON, P0191. *TT
32322005-01-28. Service bulletin. ENGINE AND ENGINE COOLING. MISFIRE AT IDLE COLD AND POSSIBLE P0171 AND OR P0174. *EH
0406040572005-01-11. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. START/STALL OR POOR DRIVEABILITY AFTER RESTART, LOSS OF GASOLINE OR CNG HOURS/MILES DATA WITH BI-FUEL VEHICLE. *TT
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
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
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
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
30182004-08-23. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ENGINE CYLINDER HEAD CUP PLUG COOLANT LEAK. *MJ
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
013532004-07-16. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ENGINE MISFIRE DUE TO INJECTOR FRETTING CORROSION. *TT
00428E2004-07-13. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. HIGHER THAN EXPECTED OIL CONSUMPTION EVEN AFTER THE INTAKE BOLTS WERE REPLACED PER 02-06-01-035. *TT
012252004-07-08. Service bulletin. ENGINE AND ENGINE COOLING. ENGINE COOLANT LEAK AT INTAKE GASKET. * MJ
00700A2004-07-02. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. 4.3L L35 ENGINE WIDE OPEN THROTTLE DIAGNOSTIC TROUBLE CODE (DTC) P0335, P0336, P0339. *TT *MJ
01119A2004-07-02. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ROLL-OUT FOR THE GEN III SMALL BLOCK ENGINES WITH IRIDIUM SPARK PLUGS. ALSO INCLUDES 2003/2004 M/L VANS. *TT
01485B2004-06-09. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. TIMING CHAIN TENSIONER BREAKPOINTS FOR SERVICE KIT OR PRODUCTION FIX. RATTLE-TYPE NOISE COMING FROM THE ENGINE AT APPROXIMATELY 1800 TO 2200 RPMS. 4.3L LU3 L35 ENGINE. *TT
040162004-05-19. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. EVAPORATIVE EMISSION SYSTEM DIAGNOSTIC DISABLED BY INCORRECT FUEL LEVEL REFERENCE. RECALL BULLETIN. *TT
0206020082004-04-16. Service bulletin. ENGINE AND ENGINE COOLING. NEW ENGINE COOLANT FILL PROCEDURE. *TT
014852004-03-01. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. TIMING CHAIN TENSIONER BREAKPOINTS FOR SERVICE KIT OR PRODUCTION FIX. RATTLE-TYPE NOISE COMING FROM THE ENGINE AT APPROXIMATELY 1800 TO 2200 RPMS. 4.3L LU3 L35 ENGINE. *TT

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