Hummer H2 2003–2005 — technical service bulletin
Bulletin 040730037 · NHTSA communication 10011069 · issued Sep 1, 2004
Technical service bulletin
communication type
Power Train
component
2003–2005
model years
3
vehicle entries
Official summary
Release of dexron iii (h-revision) automatic transmission fluid (atf). 2005 and prior cars and light duty 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.