ULM Factory-verified

GMC · Regular Production Option

Driver attention assist

Years 2025–27 Models 7 Factory citations 17

Query this via API →

Also described as Driver Attention Assist

Also documented for Buick Cadillac Chevrolet

Documented applications

Acadia — Third generation (2024–2027)

2025–2027 Factory-verified

2025: O on all trims; 2026: Denali Ultimate: S; Elevation, AT4, Denali: O; 2027: Denali, Denali Ultimate: S; Elevation, AT4: O

GM factory document — 2025 gmc acadia fleet order guide, p.27.
GM factory document — 2026 gmc acadia fleet order guide, p.4.
GM factory document — 2027 gmc acadia fleet order guide, p.5.

Hummer EV Pickup (2022–2027)

2026 Factory-verified

GM factory document — 2026 gmc hummer ev pickup fleet order guide rpo codes, p.1.

Hummer EV SUV — BT1 (2024–2027)

2026 Factory-verified

GM factory document — 2026 gmc hummer ev suv fleet order guide, p.1.

Sierra EV — BT1 (2024–2027)

2025–2027 Factory-verified

2026 and 2027: included with and only available with AS3; 2025: S in 5SC, 5SD; 2026: S in 4SC, 4SD, 5SB, 5SC, 5SD; A in 3SC; not offered in 3SB; 2027: S in 4SC, 4SD, 5SC, 5SD; A in 3SC; not offered in 3SB

GM factory document — 2025 gmc sierra ev denali fleet order guide rpo codes, p.1.
GM factory document — 2025 gmc sierra ev denali fleet order guide, p.1.
GM factory document — 2027 gmc sierra ev fleet order guide rpo codes, p.1.
GM factory document — 2027 gmc sierra ev fleet order guide, p.2.

Sierra 1500 — Next-Generation (2027)

2027 Factory-verified

Pro, Elevation 3VL: not offered; Elevation 3SB: O; AT4, AT4X, Denali, Denali Ultimate: included in the trim group

GM factory document — 2027 gmc next generation sierra 1500 retail and fleet fleet order guide, p.10.
GM factory document — 2027 gmc next generation sierra 1500 retail and fleet fleet order guide rpo codes, p.1.

Yukon — T1XX (2021–2027)

2025–2027 Factory-verified

2027: AT4 Ultimate, Denali, Denali Ultimate: S; Elevation, AT4: O

GM factory document — 2025 gmc new yukon denali fleet order guide, p.16.
GM factory document — 2026 gmc yukon denali fleet order guide, p.17.
GM factory document — 2027 gmc yukon fleet order guide, p.15.

Yukon XL — T1XX (2021–2027)

2025–2027 Factory-verified

2027: AT4 Ultimate, Denali, Denali Ultimate: S; Elevation, AT4: O

GM factory document — 2025 gmc new yukon xl denali fleet order guide, p.16.
GM factory document — 2026 gmc yukon xl denali fleet order guide, p.17.
GM factory document — 2027 gmc yukon xl fleet order guide, p.15.

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