- 2025–2026 Factory-verified
all trims: S; GM includes UE4, UHX, UKC, UFG and TQ5
Y5X Factory-verified
Also documented for GMC
Documented applications
- 2023 Factory-verified
This page aggregates every documented appearance of Y5X in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.