- 2018 Single-source
new for 2018; Premier; includes KU1, KU3, UVD, N38, A45, B58, B36, DD8 and DLG (GM Authority's 2018 Impala article, narrative package-contents section, which is not the credited 'Official RPO Changes' list)
ACZ Single-source
Documented applications
This page aggregates every documented appearance of ACZ in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.