Saturday, August 8, 2026
RecallGazette

Vehicle problems, recalls & safety intelligence

Buick Century 1992–2001technical service bulletin

Bulletin 990730030 · NHTSA communication 6089996 · issued Dec 1, 1999

Technical service bulletin
communication type
Power Train
component
1992–2001
model years
60
vehicle entries

Official summary

Some vehicles equipped with hydra-matic 3t40, 4t60 or 4t60-e transxales may comment on a grinding and / or growling noise that is noticeable when in park on incline. *tt

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.