Chevrolet Trailblazer 2002 — technical service bulletin
Bulletin 030842010 · NHTSA communication 10004328 · issued Sep 1, 2003
Technical service bulletin
communication type
Exterior Lighting
component
2002
model years
3
vehicle entries
Official summary
Daytime running lamp feature cannot be disabled after body control module (bcm)replacement. *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.