Cadillac Deville 1996–1999 — technical service bulletin
Bulletin 990601010C · NHTSA communication 10005597 · issued Nov 1, 2003
Technical service bulletin
communication type
Engine and Engine Cooling
component
1996–1999
model years
12
vehicle entries
Official summary
Engine cold/knock/tick noise. *tt
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.