AT4 Preferred Package

Years 2026–27 Models 3 Factory citations 6

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Also described as LPO, Elevation dark package

Also documented for Cadillac Chevrolet

Documented applications

Sierra EV — BT1 (2024–2027)

2026–2027 Factory-verified

dealer-installed; includes RIK, SES, a 22 inch transit wheel (PJ6 in 2026, RBR in 2027) and QMN; 2026: A/D in 3SB, 3SC; not offered in 4SC, 4SD, 5SB, 5SC, 5SD; 2027: A/D 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.20.
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.18.

Yukon — T1XX (2021–2027)

2026 Factory-verified

2026: AT4: O; includes UKL, NHT, C3U

GM factory document — 2026 gmc yukon denali fleet order guide, p.22.

Yukon XL — T1XX (2021–2027)

2026 Factory-verified

2026: AT4: O; includes UKL, NHT, C3U

GM factory document — 2026 gmc yukon xl denali fleet order guide, p.22.

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