Chevrolet Silverado 1999–2008 — technical service bulletin
Bulletin 02-06-04-037 · NHTSA communication 634786 · issued Jan 1, 2010
Technical service bulletin
communication type
Unknown OR Other
component
1999–2008
model years
15
vehicle entries
Official summary
Some customers whose vehicles are operated in dusty type environments, such as farming or mining off-road type applications, may comment about the illumination of the instrument panel ses light, with diagnostic trouble code p0446 set. *tt updated 7/11/08. *nj updated 11/5/10. *pe
Vehicles covered
- 1999 Chevrolet Silverado
- 2000 Chevrolet Silverado
- 2001 Chevrolet Silverado
- 2007 Chevrolet Silverado
- 2008 Chevrolet Silverado 1500
- 2008 Chevrolet Silverado 2500
- 2008 Chevrolet Silverado 3500
- 1999 GMC Sierra
- 2000 GMC Sierra
- 2001 GMC Sierra
- 2008 GMC Sierra
- 2007 GMC Sierra 1500
- 2007 GMC Sierra 2500
- 2007 GMC Sierra 3500
- 2007 GMC Sierra Classic
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.