Service bulletins for the 2004 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.
748 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
By topic
Only bulletins with component: Cooling system are shown. Show all
| 000602006 | 2005-03-10. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. DEX-COOL ENGINE COOLANT INFORMATION. 2004 AND PRIOR PASSENGER CARS AND TRUCKS. *TT |
|---|---|
| 3121 | 2004-11-08. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. EXHAUST VIBRATION RESONANCE OR MOAN IN VEHICLES WITH GEN III V8 ENGINES. *TC |
| 3121A | 2004-11-03. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. EXHAUST VIBRATION RESONANCE OR MOAN 99-05 FULL SIZE TRUCKS AND UTILITY VEHICLES WITH GEN 3 V-8 ENGINES. *TC |
| 01339 | 2003-11-19. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN. HVAC BLOWER MOTOR FAN STAYS ON IN THE HIGH BLOWER POSITION. SERVICE VME. *TT |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.