LPO, wheel locks, Black

Years 2023, 2025–27 Models 8 Factory citations 19

Also described as LPO, Wheel locks, BlackWheel locks, alternate finish (accessory)LPO, Wheel locks, blackLPO, wheel locks, blackLPO, lug nut and wheel lock kit, black

Also documented for Buick Chevrolet GMC

Documented applications

CT4 — Alpha 2 (2020–2026)

2025–2026 Factory-verified

GM factory document — 2025 cadillac ct4 fleet order guide rpo codes, p.1.
GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1.
GM factory document — 2026 cadillac ct4 fleet order guide rpo codes, p.1.
GM factory document — 2026 cadillac ct4 v ct4 v blackwing fleet order guide rpo codes, p.1.

CT5 — Alpha 2 (2020–2026)

2025–2026 Factory-verified

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

Escalade — T1XX, 5th gen (2021–2027)

2023 Factory-verified

GM factory document — 2023 cadillac 23 escalade escalade esv electrical body builder sm en us 2022oct25, p.12.

Lyriq — BEV3 (2023–2027)

2026 Factory-verified

GM factory document — 2026 cadillac all electric lyriq lyriq v fleet order guide rpo codes, p.1.

Optiq — BEV3 (2025–2027)

2025 Factory-verified

GM factory document — 2025 cadillac all electric optiq fleet order guide rpo codes, p.1.

Vistiq — BEV3 (2026–2027)

2026–2027 Factory-verified

GM factory document — 2026 cadillac all electric vistiq fleet order guide, p.56.
GM factory document — 2027 cadillac all electric vistiq fleet order guide, p.56.

XT5 — C1XX (2017–2026)

2025–2026 Factory-verified

GM Authority 2024 accent packages article lists this code

GM factory document — 2025 cadillac xt5 fleet order guide rpo codes, p.1.
GM factory document — 2026 cadillac xt5 fleet order guide rpo codes, p.1.
GM factory document — 2025 cadillac xt5 fleet order guide, p.31.
GM factory document — 2026 cadillac xt5 fleet order guide, p.32.

XT6 — C1XX (2020–2025)

2025 Factory-verified

All trims: O

GM factory document — 2025 cadillac xt6 fleet order guide, p.34.
GM factory document — 2025 cadillac xt6 fleet order guide, p.64.

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