Buick Park Avenue 1995–1997 — technical service bulletin
Bulletin 631050 · NHTSA communication 52605 · issued Mar 1, 1997
Technical service bulletin
communication type
Unknown OR Other
component
1995–1997
model years
7
vehicle entries
Official summary
Wavy or dimpling appearance in roof panel running front to back or excessive rain noise (replace cardboard roof insulator adhesive). *tw
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.