Chevrolet Trailblazer 2002–2003 — technical service bulletin
Bulletin 030604057 · NHTSA communication 10004771 · issued Oct 1, 2003
Technical service bulletin
communication type
Engine and Engine Cooling
component
2002–2003
model years
6
vehicle entries
Official summary
Intermittent hesitation, stumble or idle stall after soak, harsh 1-2 shift, slipping 1-2 shift followed by a harsh engagement. *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.