- 2025–2026 Factory-verified
2026: AT4 Ultimate, Denali Ultimate: O
UV3 Factory-verified
Also documented for Cadillac
Documented applications
- 2025–2026 Factory-verified
2026: AT4 Ultimate, Denali Ultimate: O
This page aggregates every documented appearance of UV3 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.