- 2023–2027 Factory-verified
2025: Elevation, AT4: O; Denali: included in a package; 2026–2027: Elevation, AT4: O; AT4X, Denali: included in a package
E90 Factory-verified
Also documented for BuickChevroletPontiac
Documented applications
This page aggregates every documented appearance of E90 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.