- 2023–2027 Factory-verified
2025: AT4: O; Elevation, Denali: not offered; 2026–2027: AT4, AT4X: O; Elevation, Denali: not offered
S3W Factory-verified
Also documented for Chevrolet
Documented applications
This page aggregates every documented appearance of S3W in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.