- 2025–2027 Factory-verified
2025–2026: LT, High Country: O; Z71, RS: not offered; 2027: LT, High Country, RS: O; Z71: not offered; the 2027 guide says it is required when SAK or SAY is ordered
RQS Factory-verified
Documented applications
This page aggregates every documented appearance of RQS in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.