Pontiac Grand Prix 2004 — technical service bulletin
Bulletin 092903 · NHTSA communication 10004993 · issued Sep 29, 2003
Technical service bulletin
communication type
Equipment
component
2004
model years
1
vehicle entries
Official summary
Hvac system may not be changing modes when the blower is at or near full speed. Gm voicemail log. *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.