Chevrolet Blazer 2001–2003 — technical service bulletin
Bulletin 01582A · NHTSA communication 10005431 · issued Jan 1, 2004
Technical service bulletin
communication type
Equipment
component
2001–2003
model years
10
vehicle entries
Official summary
Hvac mode switch is inoperative or is stuck in vent mode. *mn
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.