- 2018 Single-source
new for 2018; Premier, requires ACZ; includes UEU, UFL, KSG, RQ9 and RAL (GM Authority's 2018 Impala article, narrative package-contents section, which is not the credited 'Official RPO Changes' list)
WPW Single-source
Documented applications
This page aggregates every documented appearance of WPW in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.