LPO, rear-seat entertainment, dual headrest displays with wireless connectivity and DVD

Years 2019–20, 2022–23 Models 2 Factory citations 5

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Also described as LPO, rear seat infotainment system, with DVD player, dual headrest 8 inch screens

Also documented for Chevrolet

Documented applications

Sierra — T1XX (2019–2026)

2019–2020, 2022–2023 Factory-verified

GM factory document — 2019 gmc 19 sierra 1500 body builder feb 20, p.13.
GM factory document — 2020 gmc 20 sierra 1500 electrical body buil 1, p.14.
GM factory document — 2022 gmc 22 sierra 1500 new electrical body builder sm en us 2022jul20, p.14.
GM factory document — 2023 gmc 23 sierra 1500 electrical body builder sm en us 2022oct12, p.14.

Terrain — Second generation (D2XX) (2018–2024)

2019 Factory-verified

SLE, SLE Diesel, SLT, SLT Diesel, Denali: O

GM factory document — 2019 gmc terrain order guide copy gm authority, p.32.

This page aggregates every documented appearance of SR3 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.