Chevrolet Avalanche 2004–2007 — technical service bulletin
Bulletin 050138012 · NHTSA communication 10017373 · issued Nov 1, 2006
Technical service bulletin
communication type
Equipment
component
2004–2007
model years
32
vehicle entries
Official summary
Ei05082 - loss of blower motor speeds except for high speed or inoperative. *tt updated. *kb updated *kb
Vehicles covered
- 2004 Chevrolet Avalanche
- 2005 Chevrolet Avalanche
- 2006 Chevrolet Avalanche 1500
- 2006 Chevrolet Avalanche 2500
- 2004 Chevrolet Silverado
- 2005 Chevrolet Silverado
- 2006 Chevrolet Silverado
- 2007 Chevrolet Silverado 1500
- 2007 Chevrolet Silverado 2500
- 2007 Chevrolet Silverado 3500
- 2004 Chevrolet Suburban
- 2005 Chevrolet Suburban
- 2006 Chevrolet Suburban 1500
- 2006 Chevrolet Suburban 2500
- 2004 Chevrolet Tahoe
- 2005 Chevrolet Tahoe
- 2006 Chevrolet Tahoe
- 2004 Chevrolet Trailblazer
- 2005 Chevrolet Trailblazer
- 2006 Chevrolet Trailblazer
- 2004 GMC Envoy
- 2005 GMC Envoy
- 2006 GMC Envoy
- 2004 GMC Sierra
- 2005 GMC Sierra
- 2006 GMC Sierra
- 2007 GMC Sierra 1500
- 2007 GMC Sierra 2500
- 2007 GMC Sierra 3500
- 2004 GMC Yukon
- 2005 GMC Yukon
- 2006 GMC Yukon
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.