Buick Lacrosse 2004–2005 — technical service bulletin
Bulletin 050139001 · NHTSA communication 10014973 · issued Mar 1, 2005
Technical service bulletin
communication type
Visibility
component
2004–2005
model years
3
vehicle entries
Official summary
Blower motor inoperative or intermittent, blower speed may drop or blower continues to run after key off. *tt repeat blower module failure or logic lock after tsb 05-01-39-001a has been performed. Tsb 05-01-39-001a not yet received. *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.