T4L Factory-verified

Chevrolet · Regular Production Option

Headlamps, LED

Years 2018–27 Models 13 Factory citations 40

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Also described as HeadlampsHeadlamps, LED, D-optic bi-function projector

Also documented for Buick Cadillac GMC

Documented applications

Blazer — C1XX (2019–2026)

2025–2026 Factory-verified

2LT, 3LT, RS: S; Premier: S (2025 only)

GM factory document — 2025 chevrolet blazer fleet order guide rpo codes, p.1.
GM factory document — 2025 chevrolet blazer fleet order guide, p.6.
GM factory document — 2026 chevrolet blazer fleet order guide rpo codes, p.1.
GM factory document — 2026 chevrolet blazer fleet order guide, p.5.

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.

Bolt EV — first generation (2017–2023)

2023 Factory-verified

GM factory document — 2023 chevrolet 23 bolt ev body builder sm en us 2022aug26, p.10.
GM factory document — 2023 chevrolet 23 bolt euv body builder sm en us 2022aug29, p.10.

Colorado — Third generation (2023–2027)

2023–2027 Factory-verified

Z71, ZR2: S; LT: O; WT, Trail Boss: not offered

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.38.
GM factory document — 2026 chevrolet colorado fleet order guide, p.42.
GM factory document — 2027 chevrolet colorado fleet order guide, p.42.

Corvette — C8 (2020–2027)

2020–2027 Factory-verified

GM factory document — 2020 chevrolet corvette stingray order guide copy corvetteblogger, p.41.
GM factory document — 2021 chevrolet corvette fleet order guide wayback, p.1.
GM factory document — 2022 chevrolet corvette stingray order guide copy corvetteblogger, p.53.
GM factory document — 2023 chevrolet corvette fleet order guide wayback, p.2.
GM factory document — 2024 chevrolet corvette stingray z06 e ray order guide copy corvetteblogger, p.154.
GM factory document — 2025 chevrolet corvette fleet order guide rpo codes, p.1.
GM factory document — 2026 chevrolet corvette fleet order guide rpo codes, p.1.
GM factory document — 2027 chevrolet corvette fleet order guide rpo codes, p.1.

Equinox — Third generation (D2XX) (2018–2024)

2018 Factory-verified

Premier: S

GM factory document — 2018 chevrolet all new equinox fleet order guide wayback, p.1.
2019 Factory-verified

1LT: O; 1LZ, 2LZ, 3LZ: S

GM factory document — 2019 chevrolet equinox order guide april 6 2018 copy gm authority, p.119.

Malibu — ninth generation (2016–2025)

2025 Factory-verified

2LT: S

GM factory document — 2025 chevrolet malibu fleet order guide, p.6.

Silverado HD (T1XX, 2020–2027)

2023, 2025–2027 Factory-verified

only in: 2500 HD, 3500 HD

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.

Suburban — T1XX (2021–2027)

2022–2023 Factory-verified

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.

Tahoe — T1XX (2021–2027)

2022–2023 Factory-verified

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.

Trailblazer — First generation, VSS-F (2021–2027)

2025–2027 Factory-verified

all trims: S

GM factory document — 2025 chevrolet trailblazer fleet order guide, p.5.
GM factory document — 2026 chevrolet trailblazer fleet order guide, p.5.
GM factory document — 2027 chevrolet trailblazer limited fleet order guide, p.6.

Traverse — C1XX (2018–2024)

2018–2019 Factory-verified

Premier, High Country: S

GM factory document — 2018 chevrolet traverse order guide copy gm authority, p.15, p.51.
GM factory document — 2019 chevrolet traverse order guide copy gm authority, p.17, p.73.
2024 Single-source

decoderpo.com's 2024 Traverse Limited order guide page lists it on its Standart Equipment tab (1LS); the page is a T3 mirror of GM's guide and the repository holds no GM document for 2024; the page words it as "Headlamps, LED"

Trax — Second generation, VSS-F (2024–2026)

2025–2026 Factory-verified

all trims: S

GM factory document — 2025 chevrolet trax fleet order guide, p.6.
GM factory document — 2026 chevrolet trax fleet order guide, p.6.

This page aggregates every documented appearance of T4L in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.