Buick Rainier 2004–2005 — technical service bulletin
Bulletin 040844014A · NHTSA communication 10011071 · issued Oct 1, 2004
Technical service bulletin
communication type
Structure
component
2004–2005
model years
11
vehicle entries
Official summary
Buzz type noise coming from rear speakers. *tt update. *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.