Pontiac Bonneville 2000 — technical service bulletin
Bulletin 990867006 · NHTSA communication 6088891 · issued Nov 1, 1999
Technical service bulletin
communication type
Visibility
component
2000
model years
1
vehicle entries
Official summary
Some vehicles built prior to vin breakpoint y4153225 may exhibit a wavy or dimpling appearance in the roof at rear corner of sunroof. *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.