Service bulletins for the 2004 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.
1 on file from NHTSA, as of 2026-10-19.
By type
By component
| 08-09-02 | 2008-08-14. Service bulletin. SUSPENSION:FRONT:HUB. HALFSHAFT RETAINING BOLT WITH PRE-APPLIED THREAD LOCKER FOR ALL H1 MODELS AND MODEL YEARS. *PE |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.