- 2013 Confirmed
standard on 1LT and 1SS from 2013 with the USB port (USR); the source names it only as PDIM (GM Authority 2013 RPO changes)
KTB Confirmed
Documented applications
This page aggregates every documented appearance of KTB in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.