Buick Riviera 1995–1999 — technical service bulletin
Bulletin 990603009 · NHTSA communication 6088903 · issued Oct 1, 1999
Technical service bulletin
communication type
Engine and Engine Cooling
component
1995–1999
model years
10
vehicle entries
Official summary
Conditions with floor pan corrosion perforation in battery compartment. *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.