KL9 Factory-verified

Cadillac · Regular Production Option

Automatic stop/start

Years 2017–19, 2023, 2025–27 Models 8 Factory citations 30

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Also described as Automatic stop/start, with disable

Also documented for Buick Chevrolet GMC

Documented applications

ATS — Alpha (2013–2019)

2018 Factory-verified

GM factory document — 2018 cadillac ats coupe fleet order guide wayback, p.4.
GM factory document — 2018 cadillac ats sedan fleet order guide wayback, p.4.

CT4 — Alpha 2 (2020–2026)

2025–2026 Factory-verified

Luxury, Premium Luxury, Sport, V-Series: S

GM factory document — 2025 cadillac ct4 fleet order guide, p.7.
GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.7.
GM factory document — 2026 cadillac ct4 fleet order guide, p.7.
GM factory document — 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.8.

CT5 — Alpha 2 (2020–2026)

2025–2026 Factory-verified

Premium Luxury, Sport: S; V-Series: S; V-Series Blackwing: not available

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.
GM factory document — 2025 cadillac ct5 fleet order guide, p.7.
GM factory document — 2026 cadillac ct5 fleet order guide, p.7.
GM factory document — 2025 cadillac ct5 v ct5 v blackwing fleet order guide, p.8.
GM factory document — 2026 cadillac ct5 v ct5 v blackwing fleet order guide, p.9.

CT6 — Omega (2016–2020)

2017–2019 Factory-verified

all trims: S; 2018 and 2019 from the 2018 and 2019 CT6 order guides (GM documents)

GM factory document — 2017 cadillac ct6 fleet order guide wayback, p.4.
GM factory document — 2018 cadillac ct6 order guide copy gm authority, p.58, p.61.
GM factory document — 2019 cadillac ct6 order guide copy gm authority, p.52, p.55.

Escalade — T1XX, 5th gen (2021–2027)

2023, 2025–2027 Factory-verified

2027: Luxury, Sport, Platinum Luxury, Platinum Sport: S

GM factory document — 2023 cadillac 23 escalade escalade esv electrical body builder sm en us 2022oct25, p.11.
GM factory document — 2025 cadillac new escalade escalade v fleet order guide, p.7.
GM factory document — 2027 cadillac escalade escalade v fleet order guide, p.9.

XT4 — E2 (2019–2025)

2025 Factory-verified

Premium Luxury, Sport: S

GM factory document — 2025 cadillac xt4 fleet order guide, p.6.
GM factory document — 2025 cadillac xt4 fleet order guide rpo codes, p.1.

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.8.
GM factory document — 2025 cadillac xt5 fleet order guide, p.35.
GM factory document — 2026 cadillac xt5 fleet order guide, p.10.
GM factory document — 2026 cadillac xt5 fleet order guide, p.36.

XT6 — C1XX (2020–2025)

2025 Factory-verified

All trims: S

GM factory document — 2025 cadillac xt6 fleet order guide, p.8.
GM factory document — 2025 cadillac xt6 fleet order guide, p.63.

This page aggregates every documented appearance of KL9 in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.