S1O Factory-verified

Chevrolet · Regular Production Option

LPO, console-mounted safe

Years 2022–27 Models 6 Factory citations 29

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Also described as LPO, console-mounted safe, dealer-installedLPO, Console-Mounted safe

Also documented for Cadillac GMC

Documented applications

Silverado EV — BT1 (2024–2027)

2025–2027 Factory-verified

2025: A/D in 2WT, 5WT, 8WT; not offered in 3LT, 2SP, 3SP; 2026: A/D in 4WT, 5WT, 8WT, 2LT, 3LT; not offered in 4LT, 2TR, 3TR, 2SP, 3SP; 2027: A/D in 4WT, 5WT, 8WT, 2LT, 3LT; not offered in 2TR, 3TR; included and only available with PCK

GM factory document — 2025 chevrolet silverado ev fleet order guide rpo codes, p.1.
GM factory document — 2027 chevrolet silverado ev fleet order guide rpo codes, p.1.
GM factory document — 2025 chevrolet silverado ev fleet order guide, p.29.
GM factory document — 2026 chevrolet silverado ev fleet order guide, p.44.
GM factory document — 2027 chevrolet silverado ev fleet order guide, p.38.

Silverado 1500 — Fifth generation (2027)

2027 Factory-verified

GM factory document — 2027 chevrolet next generation silverado 1500 retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2027 chevrolet next generation silverado 1500 retail and fleet fleet order guide, p.51.

Silverado HD (T1XX, 2020–2027)

2023, 2025–2027 Factory-verified

only in: 2500 HD, 3500 HD, 3500 HD chassis cab

GM factory document — 2023 chevrolet 23silverado 2500 3500hd electrical body builder sm en us 2022oct12, p.13.
GM factory document — 2025 chevrolet silverado 2500 hd retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2026 chevrolet silverado 2500 hd retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2027 chevrolet silverado 2500 hd retail and fleet fleet order guide rpo codes, p.1.

Silverado — T1XX (2019–2026)

2022–2026 Factory-verified

GM factory document — 2022 chevrolet 22 silverado 1500 new electrical body builder 042822, p.13.
GM factory document — 2023 chevrolet 23 silverado 1500 electrical body builder sm en us 2022oct24, p.13.
GM factory document — 2024 chevrolet 24 silverado1500 electrical body builder 2023nov29, p.16.
GM factory document — 2025 chevrolet silverado 1500 retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2026 chevrolet silverado 1500 retail and fleet fleet order guide rpo codes, p.1.

Suburban — T1XX (2021–2027)

2022–2023, 2025–2027 Factory-verified

2027: LS, LT, RST, Z71, High Country: O

GM factory document — 2025 chevrolet new suburban fleet order guide, p.20.
GM factory document — 2026 chevrolet suburban fleet order guide, p.20.
GM factory document — 2027 chevrolet suburban fleet order guide, p.20.
GM factory document — 2022 chevrolet 22 suburban tahoe electrical body builder sm u 2021oct08, p.12.
GM factory document — 2023 chevrolet 23 suburban tahoe electrical body builder sm en us 2022sep13, p.12.
GM factory document — 2026 chevrolet suburban tahoe electrical body builder manual service manual 2026 en us, p.8.

Tahoe — T1XX (2021–2027)

2022–2023, 2025–2027 Factory-verified

2027: LS, LT, RST, Z71, High Country, Police Package: O

GM factory document — 2025 chevrolet new tahoe retail and fleet fleet order guide, p.24.
GM factory document — 2026 chevrolet tahoe retail and fleet fleet order guide, p.27.
GM factory document — 2027 chevrolet tahoe retail and fleet fleet order guide, p.24.
GM factory document — 2027 chevrolet tahoe police package and special service fleet order guide, p.10.
GM factory document — 2022 chevrolet 22 suburban tahoe electrical body builder sm u 2021oct08, p.12.
GM factory document — 2023 chevrolet 23 suburban tahoe electrical body builder sm en us 2022sep13, p.12.
GM factory document — 2026 chevrolet suburban tahoe electrical body builder manual service manual 2026 en us, p.8.

This page aggregates every documented appearance of S1O in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.