Buick Century 2001–2002 — technical service bulletin
Bulletin 01584 · NHTSA communication 10005424 · issued Jan 1, 2004
Technical service bulletin
communication type
Engine and Engine Cooling
component
2001–2002
model years
12
vehicle entries
Official summary
Diagnostic trouble code (dtc) p0650 set after powertrain control module (pcm) replacement. Sit bulletin 1413730. *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.