Tires, 245/40R20 XL all-season, blackwall

Years 2017 Models 1 Factory citations 1

Also documented for Pontiac

Documented applications

CT6 — Omega (2016–2020)

2017 Factory-verified

Luxury 3.6L, Premium Luxury: O; included with RQA and only with it

GM factory document — 2017 cadillac ct6 fleet order guide wayback, p.3.

This page aggregates every documented appearance of QP1 in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.