Chevrolet Trailblazer 2002–2004 — technical service bulletin
Bulletin 02023 · NHTSA communication 10007212 · issued Jan 1, 2004
Technical service bulletin
communication type
Engine and Engine Cooling
component
2002–2004
model years
13
vehicle entries
Official summary
Intermittent no crank no start. Security light may be on or off. 4.2 ll8 engine. *nm
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.