Cadillac Deville 1999–2003 — technical service bulletin
Bulletin 020730031 · NHTSA communication 634945 · issued Aug 1, 2002
Technical service bulletin
communication type
Unknown / Other
component
1999–2003
model years
18
vehicle entries
Official summary
Information on inspecting the julian date code of torque converter clutch pluse width modulated valve assembly. *tt
Vehicles covered
- 1999 Cadillac Deville
- 2000 Cadillac Deville
- 2001 Cadillac Deville
- 2002 Cadillac Deville
- 2003 Cadillac Deville
- 1999 Cadillac Eldorado
- 2000 Cadillac Eldorado
- 2001 Cadillac Eldorado
- 2002 Cadillac Eldorado
- 1999 Cadillac Seville
- 2000 Cadillac Seville
- 2001 Cadillac Seville
- 2002 Cadillac Seville
- 2003 Cadillac Seville
- 1999 Oldsmobile Aurora
- 2001 Oldsmobile Aurora
- 2002 Oldsmobile Aurora
- 2003 Oldsmobile Aurora
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.