Chevrolet Blazer 2001–2003 — technical service bulletin
Bulletin 062403 · NHTSA communication 10003717 · issued Jun 24, 2003
Technical service bulletin
communication type
Equipment
component
2001–2003
model years
12
vehicle entries
Official summary
Heating ventilation and air conditioning inoperative or stuck in any mode. Diagnosis. *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.