Advanced Technology Package

Years 2022–23, 2025–27 Models 3 Factory citations 13

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Also described as Technology Package II

Also documented for Buick Cadillac Chevrolet

Documented applications

Terrain — Third generation (2025–2027)

2025–2027 Factory-verified

S: Denali (from 2026); O: Elevation, AT4 (from 2026); includes UVX, UKK, UV2 and DRZ; T3U fog lamps come with it; the 2027 guide adds UCV

GM factory document — 2025 gmc next generation terrain fleet order guide, p.7.
GM factory document — 2026 gmc next generation terrain fleet order guide, p.1.
GM factory document — 2027 gmc terrain fleet order guide, p.1.

Yukon — T1XX (2021–2027)

2022–2023, 2025–2027 Factory-verified

2027: AT4 Ultimate, Denali Ultimate: S; Denali: O; includes DRZ, NWM, NHT, ZM1

GM factory document — 2022 gmc 22 yukon yukon xl electrical body builder sm u 2021oct13, p.10.
GM factory document — 2023 gmc 23 yukon yukon xl electrical body builder sm en us 092822, p.10.
GM factory document — 2025 gmc new yukon denali fleet order guide, p.12.
GM factory document — 2026 gmc yukon denali fleet order guide, p.12.
GM factory document — 2027 gmc yukon fleet order guide, p.12.

Yukon XL — T1XX (2021–2027)

2022–2023, 2025–2027 Factory-verified

2027: AT4 Ultimate, Denali Ultimate: S; Denali: O; includes DRZ, NWM, NHT, ZM1

GM factory document — 2022 gmc 22 yukon yukon xl electrical body builder sm u 2021oct13, p.10.
GM factory document — 2023 gmc 23 yukon yukon xl electrical body builder sm en us 092822, p.10.
GM factory document — 2025 gmc new yukon xl denali fleet order guide, p.12.
GM factory document — 2026 gmc yukon xl denali fleet order guide, p.12.
GM factory document — 2027 gmc yukon xl fleet order guide, p.12.

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