LPO, utility wall strap kit

Years 2025–27 Models 4 Factory citations 12

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Also described as LPO, utility wall strap kit, dealer-installed

Also documented for GMC

Documented applications

Colorado — Third generation (2023–2027)

2025–2027 Factory-verified

O on all trims

GM factory document — 2025 chevrolet colorado fleet order guide, p.46.
GM factory document — 2026 chevrolet colorado fleet order guide, p.52.
GM factory document — 2027 chevrolet colorado fleet order guide, p.51.

Silverado EV — BT1 (2024–2027)

2025–2027 Factory-verified

2025–2027: A/D in all groups; included and only available with PCR; Sierra EV reads "LPO, flexible cargo organizer, dealer-installed"

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.63.

Silverado — T1XX (2019–2026)

2025–2026 Factory-verified

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.

This page aggregates every documented appearance of S4K in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.