- 2022–2023, 2025–2027 Factory-verified
2027: AT4, AT4 Ultimate: S
WUA Factory-verified
Also documented for Chevrolet
Documented applications
- 2022–2023, 2025–2027 Factory-verified
2027: AT4, AT4 Ultimate: S
This page aggregates every documented appearance of WUA in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.