Service bulletins for the 2006 Hummer H1
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.
3 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: Cooling system are shown. Show all
| 08-04-02 | 2008-05-15. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN. HUMMER - GEARED FAN DRIVE REPLACEMENT - ALL 2006 MODEL YEAR ALPHA VEHICLES. *NJ |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.