Service engine soon light due to a P0171 diagnostic trouble code
Chevrolet technical service bulletin 3221C for 2004-2006 Chevrolet Colorado, 2004-2006 GMC Canyon and 2006 Hummer H3.
- Bulletin number
- 3221C
- Component
- Engine and engine cooling
- Summary
- Service engine soon light due to a p0171 diagnostic trouble code. Eh 3221a not yet received. Tt update. Tt
Owners of these vehicles have filed 230 complaints in the engine category.
Vehicles covered
- Chevrolet Colorado 2004-2006 200420052006
- GMC Canyon 2004-2006 200420052006
- Hummer H3 2006 2006
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