Wheels, 20 inch aluminum, Ultra Bright machined, premium paint

Years 2018 Models 1

Also documented for GMC

Documented applications

XTS — Epsilon II, enlarged (2013–2019)

2018 Confirmed

standard on Platinum only; replaces RQ9 (GM Authority 2018 XTS changes)

This page aggregates every documented appearance of Q7J in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.