Buick Park Avenue 1995 — technical service bulletin
Bulletin 476006A · NHTSA communication 45850 · issued Jun 1, 1995
Technical service bulletin
communication type
Engine and Engine Cooling
component
1995
model years
6
vehicle entries
Official summary
Popping/fluttering/ticking/spark knock/clunking noise while driving up medium grades or accelerating from a stop (replace exhaust seal or right exhaust manifold).*sd
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.