Buick Rainier 2002–2004 — technical service bulletin
Bulletin PIT3880A · NHTSA communication 10151858 · issued Nov 19, 2018
Technical service bulletin
communication type
Visibility
component
2002–2004
model years
10
vehicle entries
Official summary
This Preliminary information communicates a change in software in the PDM to prevent "wandering mirrors".
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.