Pontiac Bonneville 1992–1997 — technical service bulletin
Bulletin 108150A · NHTSA communication 50563 · issued Dec 1, 1996
Technical service bulletin
communication type
Power Train
component
1992–1997
model years
6
vehicle entries
Official summary
Some vehicles may display a condition at 70 mph where the speedometer reads about 4 mph faster or slower than hud. *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.