Hummer H2 2003–2005 — technical service bulletin
Bulletin 050604022 · NHTSA communication 10015006 · issued Mar 1, 2005
Technical service bulletin
communication type
Engine and Engine Cooling
component
2003–2005
model years
3
vehicle entries
Official summary
Top tier detergent gasoline (deposits, fuel economy, no start, power, performance, stall concerns). 2005 and prior all general, saab and saturn 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.