Chevrolet Cavalier 2003–2004 — technical service bulletin
Bulletin 030138005A · NHTSA communication 10002377 · issued Aug 1, 2004
Technical service bulletin
communication type
Equipment
component
2003–2004
model years
4
vehicle entries
Official summary
Hard to change hvac mode or temperature settings. *tt update. *ar
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.