1SA Pro Safety Plus package

Years 2024–27 Models 2 Factory citations 8

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Also described as 1SA Safety Plus Package

Also documented for Buick Chevrolet

Documented applications

Sierra HD — T1XX (2020–2027)

2024–2027 Factory-verified

only in: 2500 HD and 3500 HD pickup; includes front and rear park assist (UD5), rear cross traffic alert (UFG), lane change alert with side blind zone alert (UKC) and trailer mirrors (DWI); 2024: GM Authority 2024 changes page; Pro: O; SLE, SLT, AT4, AT4X, Denali, Denali Ultimate: not offered

GM factory document — 2025 gmc sierra 2500 hd retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2026 gmc sierra 2500 hd retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2027 gmc sierra 2500 hd retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2025 gmc sierra 2500 hd retail and fleet fleet order guide, p.25.
GM factory document — 2026 gmc sierra 2500 hd retail and fleet fleet order guide, p.23.
GM factory document — 2027 gmc sierra 2500 hd retail and fleet fleet order guide, p.24.

Sierra — T1XX (2019–2026)

2025–2026 Factory-verified

GM factory document — 2025 gmc sierra 1500 retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2026 gmc sierra 1500 retail and fleet fleet order guide rpo codes, p.1.

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