Nightfall Essentials package

Years 2023, 2026–27 Models 2 Factory citations 2

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Also described as Driver Alert Package II

Also documented for Cadillac Chevrolet

Documented applications

Canyon — Third generation (VSS-T) (2023–2027)

2026–2027 Factory-verified

AT4: O; Elevation, AT4X, Denali: not offered

GM factory document — 2026 gmc canyon fleet order guide, p.19.
GM factory document — 2027 gmc canyon fleet order guide, p.20.

Sierra HD — T1XX (2020–2027)

2023 Single-source

not available on Pro; the 2024 Sierra HD Pro Safety package (PDI) replaces it as the standard package (GM Authority 2024 changes page)

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