Buick Rainier 2003–2004 — technical service bulletin
Bulletin 040604053 · NHTSA communication 10012114 · issued Jul 1, 2004
Technical service bulletin
communication type
Engine and Engine Cooling
component
2003–2004
model years
7
vehicle entries
Official summary
Service engine soon light on p0133, p0172. *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.