- 1998–1999 Factory-verified
U18 Factory-verified
Also documented for ChevroletOldsmobilePontiacSaturn
Documented applications
- 1998–1999 Factory-verified
- 1998–1999 Factory-verified
This page aggregates every documented appearance of U18 in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.