ZCD ✓ Factory-verified

Cadillac · Regular Production Option

Tire, compact spare

Years 2016–17, 2025–26 Models 4 Factory citations 9

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Also described as Tire, compact spare, T135/70R18, blackwall

Also documented for BuickChevroletGMC

Documented applications

CT6 — Omega (2016–2020) →

• 2017 ✓ Factory-verified

  all trims: S

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

SRX — Theta Premium / GMT166 (2010–2016) →

• 2016 ● Confirmed

  all trims: O; GM's 2016 SRX order guide (GM Authority's copy, published September 18, 2015)

XT5 — C1XX (2017–2026) →

• 2025–2026 ✓ Factory-verified

  all trims: S

  ⛭ GM factory document — 2025 cadillac xt5 fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2026 cadillac xt5 professional vehicles fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2025 cadillac xt5 fleet order guide, p.6.

  ⛭ GM factory document — 2025 cadillac xt5 fleet order guide, p.31.

  ⛭ GM factory document — 2026 cadillac xt5 fleet order guide, p.8.

  ⛭ GM factory document — 2026 cadillac xt5 fleet order guide, p.33.

XT6 — C1XX (2020–2025) →

• 2025 ✓ Factory-verified

  All trims: S

  ⛭ GM factory document — 2025 cadillac xt6 fleet order guide, p.7.

  ⛭ GM factory document — 2025 cadillac xt6 fleet order guide, p.66.

Related codes · mentioned in these notes

OS

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