Some owners may comment on the service 4WD indicator illuminating, in addition to diagnostic trouble code...
Chevrolet technical service bulletin 020421002 for 2002 Chevrolet Trailblazer and 2002 GMC Envoy.
- Bulletin number
- 020421002
- Component
- Unknown or other
- Summary
- Some owners may comment on the service 4wd indicator illuminating, in addition to diagnostic trouble code b2725. Tt
Vehicles covered
- Chevrolet Trailblazer 2002 2002
- GMC Envoy 2002 2002
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