Q5O ✓ Factory-verified

Cadillac · Regular Production Option

Tires, P225/45R17 all-season, self-sealing

Years 2025–26 Models 1 Factory citations 2

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Documented applications

CT4 — Alpha 2 (2020–2026) →

• 2025–2026 ✓ Factory-verified

  only in: CT4; Luxury: S

  ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.6.

  ⛭ GM factory document — 2026 cadillac ct4 fleet order guide, p.6.

Related codes · mentioned in these notes

S

This page aggregates every documented appearance of Q5O in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.