Off-Road Lifted Suspension Package

Years 2020, 2022–27 Models 3 Factory citations 12

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Also described as Chassis, liftedSuspension Package

Also documented for GMC

Documented applications

Silverado EV — BT1 (2024–2027)

2026–2027 Factory-verified

2026: S in 2TR, 3TR; not offered in 4WT, 5WT, 8WT, 2LT, 3LT, 4LT, 2SP, 3SP; 2027: S in 2TR, 3TR; not offered in 4WT, 5WT, 8WT, 2LT, 3LT; Sierra EV reads "Chassis, 2 inch lift"

GM factory document — 2026 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 — 2026 chevrolet silverado ev fleet order guide, p.16.
GM factory document — 2027 chevrolet silverado ev fleet order guide, p.14.

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.35.

Silverado — T1XX (2019–2026)

2020, 2022–2026 Factory-verified

GM factory document — 2020 chevrolet silverado 1500 fleet order guide wayback, p.1.
GM factory document — 2022 chevrolet 22 silverado 1500 new electrical body builder 042822, p.15.
GM factory document — 2023 chevrolet 23 silverado 1500 electrical body builder sm en us 2022oct24, p.16.
GM factory document — 2024 chevrolet 24 silverado1500 electrical body builder 2023nov29, p.19.
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 Z7X in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.