Headlamps, LED

Years 2018–19, 2022–23, 2025–27 Models 7 Factory citations 19

Also described as Headlamps, LED, includes LED Buick Evonik signature accents with LED bi-functional projector, side marker and reflex, and LED park lamp in fasciaHeadlamps, Bi-LED

Also documented for Cadillac Chevrolet GMC

Documented applications

Enclave — C1XX (2018–2024)

2018, 2022–2023 Factory-verified

S on all trims

GM factory document — 2018 buick enclave fleet order guide wayback, p.1.
GM factory document — 2022 buick enclave order guide copy nhtsa docket, p.7, p.27.
GM factory document — 2023 buick enclave order guide copy autoevolution wayback, p.6, p.24.

Encore — Gamma II (2013–2022)

2018–2019 Factory-verified

2018: Essence, Premium: S; 2019: Essence: S

GM factory document — 2018 buick encore order guide copy gm authority, p.5, p.20.
GM factory document — 2019 buick encore order guide copy gm authority, p.4, p.18.

Encore GX — VSS-F (2020–2027)

2025–2027 Factory-verified

Preferred, Sport Touring, Avenir: S

GM factory document — 2025 buick encore gx fleet order guide, p.6.
GM factory document — 2026 buick encore gx fleet order guide, p.6.
GM factory document — 2027 buick encore gx fleet order guide, p.6.

Envision — D2XX, imported from China (2016–2020)

2019 Factory-verified

1SN, 1SP: S; printed as new

GM factory document — 2019 buick envision order guide copy gm authority, p.5, p.20.

Envision — E2XX (2021–2027)

2025–2027 Factory-verified

2027: all trims: S

GM factory document — 2025 buick envision fleet order guide rpo codes, p.1.
GM factory document — 2027 buick envision fleet order guide rpo codes, p.1.
GM factory document — 2027 buick envision fleet order guide, p.5.

Envista — VSS-F (2024–2027)

2025–2026 Factory-verified

all trims: S

GM factory document — 2025 buick envista fleet order guide rpo codes, p.1.
GM factory document — 2025 buick envista fleet order guide, p.5.
GM factory document — 2026 buick envista fleet order guide rpo codes, p.1.
GM factory document — 2026 buick envista fleet order guide, p.5.

Regal — E2XX (2018–2020)

2018–2019 Factory-verified

2019: Avenir: S; Preferred, Preferred II, Essence, GS: O (2019 Sportback order guide)

GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
GM factory document — 2019 buick regal sportback order guide copy gm authority, p.9.

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