- 2026–2027 Factory-verified
2026: A in LT 1 (included with and only available with WBL); not offered in LT 2, RS
Q84 Factory-verified
Also documented for Cadillac
Documented applications
This page aggregates every documented appearance of Q84 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.