Buick Rendezvous 2004–2005 — technical service bulletin
Bulletin 050604032 · NHTSA communication 10017358 · issued Nov 1, 2006
Technical service bulletin
communication type
Engine and Engine Cooling
component
2004–2005
model years
4
vehicle entries
Official summary
Reduced engine power, service engine soon (ses) light with one or more of the following dtcs p0121, p0221, p2119, p2122, p2138, p2176. *tt updated 08-20-07. *kb
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.