Cadillac Deville 1998–1999 — technical service bulletin
Bulletin 990730015 · NHTSA communication 608389 · issued Jul 1, 1999
Technical service bulletin
communication type
Unknown OR Other
component
1998–1999
model years
8
vehicle entries
Official summary
Malfunction indicator lamp (mil) illuminates, speedometer fluctuates/inoperative, cruise control/torque converter clutch inoperative. *mjs
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.