Hummer H2 2003–2005 — technical service bulletin
Bulletin PIT3472A · NHTSA communication 10156948 · issued Mar 22, 2019
Technical service bulletin
communication type
Suspension
component
2003–2005
model years
3
vehicle entries
Official summary
This Preliminary Information communication advises the Dealer that the rear end of the vehicle may appear to sag after the vehicle sits overnight or longer. After the vehicle is started, the compressor will engage and the rear of the vehicle will rise to normal operating level. This is normal and no parts should be replaced for this concern.
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.