Buick Skylark 1987–1988 — technical service bulletin
Bulletin 476147 · NHTSA communication 37954 · issued Dec 1, 1994
Technical service bulletin
communication type
Engine and Engine Cooling
component
1987–1988
model years
6
vehicle entries
Official summary
Rattling noise/engine overheating. *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.