AM General Hummer 2002–2003 — technical service bulletin
Bulletin 020139004 · NHTSA communication 634884 · issued Aug 1, 2002
Technical service bulletin
communication type
Visibility
component
2002–2003
model years
11
vehicle entries
Official summary
Information regarding new pag oil released for certain vehicles including all 2003 passenger cars and trucks. *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.