Chevrolet Trailblazer 2002 — technical service bulletin
Bulletin 030844002 · NHTSA communication 10000946 · issued Jul 1, 2003
Technical service bulletin
communication type
Equipment
component
2002
model years
3
vehicle entries
Official summary
Radio and / or hvac systems change while driving. *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.