Gm: the service 4WD light is on and a trouble code is set
Hummer technical service bulletin 09-04-21-005D for 2006-2010 Hummer H3 and 2006-2009 Hummer H2 SUT.
- Bulletin number
- 09-04-21-005D
- Component
- Power train: driveline
- Summary
- Gm: the service 4wd light is on and a trouble code is set. This is a software problem. Rm
Owners of these vehicles have filed 43 complaints in the transmission category.
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