Buick Rainier 2003–2005 — technical service bulletin
Bulletin 040604076 · NHTSA communication 10012723 · issued Jun 1, 2005
Technical service bulletin
communication type
Engine and Engine Cooling
component
2003–2005
model years
9
vehicle entries
Official summary
Information on unstable/rough/lumpy engine idle, and low speed vehicle surge, random disturbance or vehicle shudder. *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.