Chevrolet Silverado 2001–2005 — technical service bulletin
Bulletin 030730044 · NHTSA communication 10004326 · issued Aug 1, 2004
Technical service bulletin
communication type
Power Train
component
2001–2005
model years
10
vehicle entries
Official summary
Information on allison transmission service repairs - full service of internal components. *tt
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.