Air ionizer

Years 2017, 2023, 2025–26 Models 4 Factory citations 9

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Also described as Air cleaner, ionizing

Also documented for Buick Chevrolet

Documented applications

CT5 — Alpha 2 (2020–2026)

2023 Factory-verified

GM factory document — 2023 cadillac ct5 v ct5 v blackwing fleet order guide wayback, p.1.

CT6 — Omega (2016–2020)

2017 Factory-verified

Luxury, Premium Luxury: O with C24; Platinum: S

GM factory document — 2017 cadillac ct6 fleet order guide wayback, p.2.

XT5 — C1XX (2017–2026)

2025–2026 Factory-verified

2025: Premium Luxury, Sport: O; Luxury: not available; 2026: Sport: S; Premium Luxury: O; Luxury: not available

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.18.
GM factory document — 2026 cadillac xt5 fleet order guide, p.1.
GM factory document — 2026 cadillac xt5 fleet order guide, p.19.

XT6 — C1XX (2020–2025)

2025 Factory-verified

Premium Luxury: S; Sport: S

GM factory document — 2025 cadillac xt6 fleet order guide, p.1.
GM factory document — 2025 cadillac xt6 fleet order guide, p.63.

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