- 2023–2027 Factory-verified
2025: Denali: S; AT4: O; Elevation: not offered; 2026–2027: AT4X, Denali: S; Elevation, AT4: not offered
MFI Factory-verified
Also documented for Cadillac
Documented applications
This page aggregates every documented appearance of MFI in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.