Keyless access

Years 2014–18, 2023, 2025–27 Models 14 Factory citations 44

Also described as Keyless Access, passive entryKeyless access, passive entryKeyless entry, remoteRemote keyless entry, extended range, passive entryKeyless Open (extended-range remote keyless entry)Remote keyless entryKeyless Access

Also documented for Buick Chevrolet GMC

Documented applications

ATS — Alpha (2013–2019)

2014–2015, 2018 Factory-verified

GM factory document — 2014 cadillac ats fleet order guide wayback, p.4.
GM factory document — 2015 cadillac ats coupe fleet order guide wayback, p.2.
GM factory document — 2018 cadillac ats coupe fleet order guide wayback, p.2.
GM factory document — 2018 cadillac ats sedan fleet order guide wayback, p.2.
GM factory document — 2018 cadillac ats v fleet order guide wayback, p.2.

CT4 — Alpha 2 (2020–2026)

2025–2026 Factory-verified

all trims: S

GM factory document — 2025 cadillac ct4 fleet order guide, p.2.
GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.2.
GM factory document — 2026 cadillac ct4 fleet order guide, p.3.
GM factory document — 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.3.

CT5 — Alpha 2 (2020–2026)

2023, 2025–2026 Factory-verified

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

GM factory document — 2023 cadillac ct5 v ct5 v blackwing fleet order guide wayback, p.1.
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.2.
GM factory document — 2026 cadillac ct5 fleet order guide, p.2.
GM factory document — 2025 cadillac ct5 v ct5 v blackwing fleet order guide, p.2.
GM factory document — 2026 cadillac ct5 v ct5 v blackwing fleet order guide, p.3.

CTS — Alpha (2014–2019)

2014–2015, 2018 Factory-verified

Vsport, Vsport Premium: S

GM factory document — 2014 cadillac cts sedan fleet order guide wayback, p.2.
GM factory document — 2015 cadillac cts sedan fleet order guide wayback, p.2.
GM factory document — 2018 cadillac cts sedan fleet order guide wayback, p.2.

CTS — Sigma II (2008–2015)

2014 Factory-verified

every 2014 coupe and the CTS-V Sedan: S

GM factory document — 2014 cadillac cts coupe and cts v coupe fleet order guide wayback, p.1.
GM factory document — 2014 cadillac cts v sedan fleet order guide wayback, p.2.

Escalade IQ — Ultium BEV (2025–2027)

2025–2027 Factory-verified

GM factory document — 2025 cadillac all electric escalade iq fleet order guide rpo codes, p.1.
GM factory document — 2027 cadillac all electric escalade iql fleet order guide rpo codes, p.1.

Escalade — K2XX (2015–2020)

2015–2017 Factory-verified

2015: S on all trims

GM factory document — 2015 cadillac escalade fleet order guide wayback, p.2.
GM factory document — 2016 chevrolet escalade escalade esv suburban tahoe yukon yukon xl electrical body builders manual service manual 2016 en us, p.4.
GM factory document — 2017 chevrolet escalade escalade esv suburban tahoe yukon yukon xl electrical body builders manual service manual 2017 en us 1, p.13.

Escalade — T1XX, 5th gen (2021–2027)

2023, 2025–2027 Factory-verified

2027: S on all trims

GM factory document — 2023 cadillac 23 escalade escalade esv electrical body builder sm en us 2022oct25, p.10.
GM factory document — 2025 cadillac new escalade escalade v fleet order guide, p.3.
GM factory document — 2027 cadillac escalade escalade v fleet order guide, p.3.

Optiq — BEV3 (2025–2027)

2025–2027 Factory-verified

GM factory document — 2025 cadillac all electric optiq fleet order guide rpo codes, p.1.
GM factory document — 2027 cadillac all electric optiq optiq v fleet order guide rpo codes, p.1.

SRX — Theta Premium / GMT166 (2010–2016)

2016 Confirmed

Standard: not offered; GM's 2016 SRX order guide (GM Authority's copy, published September 18, 2015)

Vistiq — BEV3 (2026–2027)

2026 Factory-verified

all trims: S

GM factory document — 2026 cadillac all electric vistiq fleet order guide, p.53.

XT4 — E2 (2019–2025)

2025 Factory-verified

Premium Luxury, Sport: S

GM factory document — 2025 cadillac xt4 fleet order guide, p.2.
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.3.
GM factory document — 2025 cadillac xt5 fleet order guide, p.21.
GM factory document — 2026 cadillac xt5 fleet order guide, p.3.
GM factory document — 2026 cadillac xt5 fleet order guide, p.22.

XT6 — C1XX (2020–2025)

2025 Factory-verified

All trims: S; passive entry

GM factory document — 2025 cadillac xt6 fleet order guide, p.3.
GM factory document — 2025 cadillac xt6 fleet order guide, p.62.

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