Service bulletins for the 2003 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.
65 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: Instrument cluster are shown. Show all
| 07-08-49-020R | 2023-10-18. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; ELECTRICAL SYSTEM:INSTRUMENT PANEL:SPEEDOMETER/ODOMETER. This informational bulletin provides information for the IPC odometer programming method quick reference guide. |
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| 070849020M | 2021-04-16. Service bulletin. ELECTRICAL SYSTEM:INSTRUMENT PANEL:SPEEDOMETER/ODOMETER:SENSOR/SENDING UNIT; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. IPC Odometer Programming Method Quick Reference Guide |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.