Chevrolet Trailblazer 2002 — technical service bulletin
Bulletin 030604034 · NHTSA communication 10002943 · issued Jul 1, 2003
Technical service bulletin
communication type
Engine and Engine Cooling
component
2002
model years
3
vehicle entries
Official summary
Service engine soon light on, diagnostic trouble code p0135 set. *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.