Buick Lesabre 2004–2005 — technical service bulletin
Bulletin 612 · NHTSA communication 10015778 · issued Dec 1, 2004
Technical service bulletin
communication type
Equipment
component
2004–2005
model years
4
vehicle entries
Official summary
Automatic climate control difficult to maintain the inside temperature or the blower speed stays too high. Gm tech link. *tt
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.