Chevrolet Trailblazer 2003–2004 — technical service bulletin
Bulletin 05062004 · NHTSA communication 10013212 · issued May 6, 2004
Technical service bulletin
communication type
Engine and Engine Cooling
component
2003–2004
model years
6
vehicle entries
Official summary
S engine possible false code dtc p0172. *eh
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.