T8Z Factory-verified

Chevrolet · Regular Production Option

Buckle to Drive

Years 2004, 2022–27 Models 15 Factory citations 53

Query this via API →

Also described as Buckle to driveBuckle to drive, can be turned on and off in Settings or the Teen driver menuEmissions, Mexico low emission vehicle

Also documented for Buick Cadillac GMC

Documented applications

Blazer EV (2024–2027)

2025–2027 Factory-verified

GM factory document — 2025 chevrolet blazer ev fleet order guide rpo codes, p.1.
GM factory document — 2026 chevrolet blazer ev fleet order guide rpo codes, p.1.
GM factory document — 2027 chevrolet blazer ev fleet order guide rpo codes, p.1.

BrightDrop (2022–2026)

2025–2026 Factory-verified

S;

GM factory document — 2025 chevrolet brightdrop 400 and brightdrop 600 fleet order guide, p.1.
GM factory document — 2026 chevrolet brightdrop 400 and brightdrop 600 fleet order guide, p.1.

Colorado — Third generation (2023–2027)

2023–2027 Factory-verified

S on all trims

GM factory document — 2023 chevrolet 23colorado electrical body builder, p.13.
GM factory document — 2024 chevrolet 24colorado electrical body builder manual 18272478 2023oct09, p.14.
GM factory document — 2025 chevrolet colorado fleet order guide, p.31.
GM factory document — 2026 chevrolet colorado fleet order guide, p.36.
GM factory document — 2027 chevrolet colorado fleet order guide, p.35.

Equinox EV — Ultium BEV2 (2024–2027)

2025–2027 Factory-verified

GM factory document — 2025 chevrolet new 25my equinox ev fleet order guide rpo codes, p.1.
GM factory document — 2026 chevrolet equinox ev fleet order guide rpo codes, p.1.
GM factory document — 2027 chevrolet equinox ev fleet order guide rpo codes, p.1.
GM factory document — 2025 chevrolet new 25my equinox ev fleet order guide, p.2.
GM factory document — 2026 chevrolet equinox ev fleet order guide, p.2.
GM factory document — 2027 chevrolet equinox ev fleet order guide, p.2.

Equinox — Fourth generation (2025–2027)

2025–2027 Factory-verified

S on all trims

GM factory document — 2025 chevrolet all new equinox fleet order guide, p.2.
GM factory document — 2026 chevrolet equinox fleet order guide, p.2.
GM factory document — 2027 chevrolet equinox fleet order guide, p.2.

Malibu — ninth generation (2016–2025)

2025 Factory-verified

all trims: S

GM factory document — 2025 chevrolet malibu fleet order guide, p.2.

Silverado EV — BT1 (2024–2027)

2024–2027 Factory-verified

GM factory document — 2024 chevrolet silverado ev fleet fleet order guide wayback, 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.3.
GM factory document — 2026 chevrolet silverado ev fleet order guide, p.3.
GM factory document — 2027 chevrolet silverado ev fleet order guide, p.4.

Silverado 1500 — Fifth generation (2027)

2027 Factory-verified

prevents shifting out of Park until the driver belt is fastened; times out after 20 seconds

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.1.

Silverado — GMT800 (1999–2007)

2004 Factory-verified internal

GM factory document — 2004 chevrolet chevy c silverado 2wd rpo code list, p.1.
GM Heritage factory kit — 2004 Chevrolet Silverado, p.68.

Silverado HD — GMT800 (2001–2007)

2004 Factory-verified internal

GM factory document — 2004 chevrolet chevy c silverado 2wd rpo code list, p.1.

Silverado HD (T1XX, 2020–2027)

2025–2027 Factory-verified

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

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)

2023–2026 Factory-verified

GM factory document — 2023 chevrolet 23 silverado 1500 electrical body builder sm en us 2022oct24, p.14.
GM factory document — 2024 chevrolet 24 silverado1500 electrical body builder 2023nov29, p.17.
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: S on all trims

GM factory document — 2025 chevrolet new suburban fleet order guide, p.5.
GM factory document — 2026 chevrolet suburban fleet order guide, p.5.
GM factory document — 2027 chevrolet suburban fleet order guide, p.5.
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.13.
GM factory document — 2026 chevrolet suburban tahoe electrical body builder manual service manual 2026 en us, p.9.

Tahoe — T1XX (2021–2027)

2022–2023, 2025–2027 Factory-verified

2027: S on all trims

GM factory document — 2025 chevrolet new tahoe retail and fleet fleet order guide, p.4.
GM factory document — 2026 chevrolet tahoe retail and fleet fleet order guide, p.5.
GM factory document — 2027 chevrolet tahoe retail and fleet fleet order guide, p.5.
GM factory document — 2027 chevrolet tahoe police package and special service fleet order guide, p.2.
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.13.
GM factory document — 2026 chevrolet suburban tahoe electrical body builder manual service manual 2026 en us, p.9.

Traverse — Third generation (2024–2027)

2025–2027 Factory-verified

S on all trims; prevents shifting out of Park until the driver belt is fastened; times out after 20 seconds; can be turned on and off in Settings

GM factory document — 2025 chevrolet traverse fleet order guide, p.1.
GM factory document — 2026 chevrolet traverse fleet order guide, p.1.
GM factory document — 2027 chevrolet traverse fleet order guide, p.1.
2024 Single-source

decoderpo.com's 2024 ALL-NEW Traverse order guide page lists it on its Standart Equipment tab (LS, LT, Z71); the page is a T3 mirror of GM's guide and the repository holds no GM document for 2024; the page words it as "Buckle to Drive, prevents vehicle from being shifted out of Park until driver seat belt is fastened; times out after 20 seconds and encourages seat belt use, can be turned on and off in Settings menu"

This page aggregates every documented appearance of T8Z in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.