- 2012 Confirmed
deleted for 2013 (GM Authority 2013 RPO changes); every wheel and tire code changed for 2012 (GM Authority 2012 RPO changes); 2012 from the 2013 deletion list
R3Z Confirmed
Documented applications
This page aggregates every documented appearance of R3Z in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.