Buick Rainier 2003–2007 — technical service bulletin
Bulletin 05-04-21-003 · NHTSA communication 10017464 · issued Jan 1, 2008
Technical service bulletin
communication type
Power Train
component
2003–2007
model years
58
vehicle entries
Official summary
Service 4wd light illuminated, diagnostic trouble code (dtc) c0374 set. *tt updated 10/05/07. *nj inspect wiring harness to transfer case speed sensors, replace wiring harness. Updated 7/18/08 *pe
Vehicles covered
- 2004 Buick Rainier
- 2005 Buick Rainier
- 2006 Buick Rainier
- 2003 Cadillac Escalade
- 2004 Cadillac Escalade
- 2005 Cadillac Escalade
- 2006 Cadillac Escalade
- 2003 Chevrolet Avalanche
- 2004 Chevrolet Avalanche
- 2005 Chevrolet Avalanche
- 2006 Chevrolet Avalanche 1500
- 2007 Chevrolet Avalanche 1500
- 2006 Chevrolet Avalanche 2500
- 2007 Chevrolet Avalanche 2500
- 2003 Chevrolet Silverado
- 2004 Chevrolet Silverado
- 2005 Chevrolet Silverado
- 2006 Chevrolet Silverado
- 2007 Chevrolet Silverado
- 2003 Chevrolet Suburban
- 2004 Chevrolet Suburban
- 2005 Chevrolet Suburban
- 2006 Chevrolet Suburban 1500
- 2007 Chevrolet Suburban 1500
- 2006 Chevrolet Suburban 2500
- 2003 Chevrolet Tahoe
- 2004 Chevrolet Tahoe
- 2005 Chevrolet Tahoe
- 2006 Chevrolet Tahoe
- 2007 Chevrolet Tahoe
- 2003 Chevrolet Trailblazer
- 2004 Chevrolet Trailblazer
- 2005 Chevrolet Trailblazer
- 2006 Chevrolet Trailblazer
- 2007 Chevrolet Trailblazer 360
- 2003 GMC Envoy
- 2004 GMC Envoy
- 2005 GMC Envoy
- 2006 GMC Envoy
- 2007 GMC Envoy 360
- 2003 GMC Sierra
- 2004 GMC Sierra
- 2005 GMC Sierra
- 2006 GMC Sierra
- 2007 GMC Sierra 1500
- 2007 GMC Sierra 2500
- 2007 GMC Sierra 3500
- 2007 GMC Sierra Classic
- 2003 GMC Yukon
- 2004 GMC Yukon
- 2005 GMC Yukon
- 2006 GMC Yukon
- 2007 GMC Yukon
- 2003 Oldsmobile Bravada
- 2004 Oldsmobile Bravada
- 2005 Saab 9-7X
- 2006 Saab 9-7X
- 2007 Saab 9-7X
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.