Hummer H2 2003–2007 — technical service bulletin
Bulletin 030604030 · NHTSA communication 10021799 · issued Apr 1, 2009
Technical service bulletin
communication type
Fuel System, Gasoline
component
2003–2007
model years
10
vehicle entries
Official summary
Various driveability functions due to clogged fuel injectors, mil/ses dtc's p0171, p0172, p0174, p0300, p1174, p1175. *kb updated 08-15-07. *kb updated 8/4/09. *pe
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.