Buick Century 2003–2004 — technical service bulletin
Bulletin 040604066A · NHTSA communication 10011048 · issued Sep 1, 2005
Technical service bulletin
communication type
Engine and Engine Cooling
component
2003–2004
model years
10
vehicle entries
Official summary
Clunk/bang from rear of vehicle. *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.