Chevrolet Silverado 2001–2005 — technical service bulletin
Bulletin 050090001 · NHTSA communication 10013446 · issued Jan 1, 2005
Technical service bulletin
communication type
Engine and Engine Cooling
component
2001–2005
model years
10
vehicle entries
Official summary
Information on the proper air filter for the duramax diesel. *eh
Vehicles covered
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.