Service bulletins for the 2003 Hummer H2
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.
750 on file from NHTSA, as of 2026-10-19.
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By component
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Only bulletins with component: Engine are shown. Show all
| 030604031 | 2003-09-29. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. REVISED DIAGNOSTIC TROUBLE CODE P1125. *TT |
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| 020604057B | 2003-09-26. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. LABOR OPERATION ASSIGNMENTS FOR CONTROL MODULE REPROGRAMMING. *TT |
| 030604030 | 2003-08-15. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. MULTIPLE DRIVEABILITY SYMPTOMS OF LONG OR HARD STARTS, CHUGGLE, ROUGH IDLE AND LIGHT OR INTERMITTENT MISFIRE DUE TO CLOGGED FUEL INJECTORS. *TT |
| 020603006A | 2003-03-31. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. INTERMITTENT ILLUMINATION OF VARIOUS INSTRUMENT PANEL WARNING LAMPS - SES, GENERATOR, SIR, BRAKE, SECURITY,THEFT, ABS, HOT; GAGE READINGS INCORRECT; ERRATIC RPM DISPLAY; NO CRANK ENGINE. 1997-2003 PASSENGER CARS AND TRUCKS. *TT |
| 020605005A | 2003-03-27. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. EXHAUST / MUFFLER HEAT SHIELD RATTLE, POPPING NOISE UNDER VEHICLE. *TT |
| 020601029 | 2003-02-11. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. NEEDLE BEARINGS FOUND IN OIL PAN. *TT |
| 020604015 | 2002-05-21. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. INTERMITTENT NO CRANK, NO START CONDITION FOR 2001-2002 PASSENGER CARS AND TRUCKS. *SLC 2001-2007 GM PASSENGER CARS AND LIGHT-DUTY TRUCKS (INCLUDING SATURN). *TT |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.