Buick Rainier 2002–2004 — technical service bulletin
Bulletin 040602005 · NHTSA communication 10011205 · issued Aug 1, 2004
Technical service bulletin
communication type
Engine and Engine Cooling
component
2002–2004
model years
11
vehicle entries
Official summary
Higher than normal engine coolant temperature gauge readings. *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.