Wheels, 19 inch (48.3 cm), alloy, Diamond Cut/Midnight Silver finish

Years 2025–26 Models 1 Factory citations 2

Also documented for Chevrolet

Documented applications

CT5 — Alpha 2 (2020–2026)

2025–2026 Factory-verified

only in: CT5 (Premium Luxury, Sport)

GM factory document — 2025 cadillac ct5 fleet order guide rpo codes, p.1.
GM factory document — 2026 cadillac ct5 fleet order guide rpo codes, p.1.

This page aggregates every documented appearance of Q84 in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.