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 / 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.