Buick Century 2001–2002 — technical service bulletin
Bulletin 01609 · NHTSA communication 10007138 · issued Jan 1, 2004
Technical service bulletin
communication type
Power Train
component
2001–2002
model years
12
vehicle entries
Official summary
Diagnostic trouble code (dtc) p0650 set after pcm (powertrain control module) replacement. *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.