Buick Century 1997–1999 — technical service bulletin
Bulletin 837111 · NHTSA communication 602825 · issued Sep 1, 1998
Technical service bulletin
communication type
Power Train
component
1997–1999
model years
6
vehicle entries
Official summary
Some vehicles may experience a shaking sensation when vehicle is operated between 35-55 mph (55-90 km/h) on smooth roads with curves or dips. *yc
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.