Windows, remote express-up and express-down driver and express-down all passengers

Years 2025–27 Models 4 Factory citations 12

Also described as Windows, power, driver Express-Up and all windows Express-DownWindows, remote express-up and express-down driver, express-down all passengersWindows, driver express up and down, express down all passengers

Also documented for Buick Chevrolet

Documented applications

Acadia — Third generation (2024–2027)

2025–2027 Factory-verified

S on all trims

GM factory document — 2025 gmc acadia fleet order guide, p.9.
GM factory document — 2026 gmc acadia fleet order guide, p.9.
GM factory document — 2027 gmc acadia fleet order guide, p.10.

Sierra EV — BT1 (2024–2027)

2026–2027 Factory-verified

2026: S in 3SB, 3SC; not offered in 4SC, 4SD, 5SB, 5SC, 5SD; 2027: S in 3SB, 3SC; not offered in 4SC, 4SD, 5SC, 5SD

GM factory document — 2026 gmc sierra ev fleet order guide rpo codes, p.1.
GM factory document — 2026 gmc sierra ev fleet order guide, p.9.
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.9.

Sierra 1500 — Next-Generation (2027)

2027 Factory-verified

Pro, Elevation: S; AT4, AT4X, Denali, Denali Ultimate: not offered

GM factory document — 2027 gmc next generation sierra 1500 retail and fleet fleet order guide, p.6.
GM factory document — 2027 gmc next generation sierra 1500 retail and fleet fleet order guide rpo codes, p.1.

Terrain — Third generation (2025–2027)

2025–2027 Factory-verified

S on all trims

GM factory document — 2025 gmc next generation terrain fleet order guide, p.3.
GM factory document — 2026 gmc next generation terrain fleet order guide, p.6.
GM factory document — 2027 gmc terrain fleet order guide, p.7.

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