Buick Rainier 2002–2006 — technical service bulletin
Bulletin 3680 · NHTSA communication 10016544 · issued Sep 21, 2005
Technical service bulletin
communication type
Exterior Lighting
component
2002–2006
model years
16
vehicle entries
Official summary
Automatic headlamp defeat inoperative after bcm replacement. *tt
Vehicles covered
- 2004 Buick Rainier
- 2005 Buick Rainier
- 2006 Buick Rainier
- 2002 Chevrolet Trailblazer
- 2003 Chevrolet Trailblazer
- 2004 Chevrolet Trailblazer
- 2005 Chevrolet Trailblazer
- 2006 Chevrolet Trailblazer 360
- 2002 GMC Envoy
- 2003 GMC Envoy
- 2004 GMC Envoy
- 2005 GMC Envoy
- 2006 GMC Envoy 360
- 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.