Buick Rainier 2004 — technical service bulletin
Bulletin 040844004 · NHTSA communication 10008685 · issued May 1, 2004
Technical service bulletin
communication type
Structure
component
2004
model years
5
vehicle entries
Official summary
Pop noise heard from rear speakers when rear seat audio (rsa) is turned on or off (no fix at time, fix under development). *mj this service bulletin replaces 040844004. *eh
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.