Buick Rainier 2002–2004 — technical service bulletin
Bulletin 020421006C · NHTSA communication 10004357 · issued Mar 1, 2004
Technical service bulletin
communication type
Power Train
component
2002–2004
model years
22
vehicle entries
Official summary
Inoperative 4wd/awd lamps, inoperative 4wd/awd system. *tt
Vehicles covered
- 2004 Buick Rainier
- 2003 Chevrolet Avalanche
- 2004 Chevrolet Avalanche
- 2003 Chevrolet Silverado
- 2004 Chevrolet Silverado
- 2003 Chevrolet Suburban
- 2004 Chevrolet Suburban
- 2003 Chevrolet Tahoe
- 2004 Chevrolet Tahoe
- 2002 Chevrolet Trailblazer
- 2003 Chevrolet Trailblazer
- 2004 Chevrolet Trailblazer
- 2002 GMC Envoy
- 2003 GMC Envoy
- 2004 GMC Envoy
- 2003 GMC Sierra
- 2004 GMC Sierra
- 2003 GMC Yukon
- 2004 GMC Yukon
- 2002 Oldsmobile Bravada
- 2003 Oldsmobile Bravada
- 2004 Oldsmobile Bravada
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.