Headlamps, halogen

Years 2014–19, 2021–27 Models 10 Factory citations 28

Also described as Headlamps, halogen compositeHeadlamps, halogen, automatic exterior lamp controlHeadlamps, front, halogenHeadlamps, halogen, with automatic exterior lamp control

Also documented for Buick GMC

Documented applications

Camaro — Gen 5 Zeta (2010–2015)

2014 Confirmed

GM Authority 2014 RPO list

Caprice — Caprice PPV (2011–2017)

2017 Factory-verified

S

GM factory document — 2017 chevrolet caprice ppv order guide copy gm authority, p.2, p.12.

City Express (2015–2018)

2015–2018 Factory-verified

2018 guide: 1LS, 1LT: S

GM factory document — 2015 chevrolet city express electrical body builders manual service manual 2015 en us, p.9.
GM factory document — 2017 chevrolet city express electrical body builders manual service manual 2017 en us, p.9.
GM factory document — 2018 chevrolet 18 city express bodybuilders sm 2 w cvr pg, p.10.
GM factory document — 2018 chevrolet city express order guide copy gm authority, p.10, p.22.

Colorado — Second generation (GMT31XX) (2015–2022)

2015–2019, 2021–2022 Factory-verified

2015: Base, WT, LT: S; Z71: not offered; 2017: Base, WT, LT: S; Z71: not offered; the upfitter lists read halogen; 2018 from GM's 2018 Colorado order guide (PDF); 2021 from the upfitter list GM files for 2021 and 2022

GM factory document — 2015 chevrolet colorado fleet order guide wayback, p.3.
GM factory document — 2016 chevrolet canyon colorado electrical body builders manual service manual 2016 en us, p.13.
GM factory document — 2017 chevrolet colorado fleet order guide wayback, p.2.
GM factory document — 2019 chevrolet 19 coloradocanyon body builder sm u 2018aug01 1, p.12.
GM factory document — 2022 chevrolet 22 canyon colorado electrical body builder sm en us 2021oct15, p.13.
GM factory document — 2018 chevrolet colorado order guide copy gm authority, p.8.

Colorado — Third generation (2023–2027)

2023–2027 Factory-verified

WT, LT, Trail Boss: S; Z71, ZR2: 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.

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

2018 Factory-verified

L, LS: S

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

1SM, 1LS: S

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

Impala — tenth generation (2014–2020)

2014–2016 Factory-verified

2014: 1LS, 1FL, 1SA, 2SA, 1LT, 2LT: S; 2015–2016: 1LS, 1FL, 2FL, 1LT, 2LT, 3LT: S

GM factory document — 2014 chevrolet impala fleet order guide wayback, p.3.
GM factory document — 2015 chevrolet impala fleet order guide wayback, p.3.
GM factory document — 2016 chevrolet impala fleet order guide wayback, p.3.

Malibu — ninth generation (2016–2025)

2016 Factory-verified

all trims: S; GM's 2016 Malibu order guide

GM factory document — 2016 chevrolet malibu order guide copy gm authority, p.4.
2025 Factory-verified

LS, RS, 1LT: 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.

Trax — first US generation (2015–2022)

2016 Factory-verified

all trims: S; the 2018–2019 guides give SBM and SBV

GM factory document — 2016 chevrolet trax fleet order guide wayback, p.3.

This page aggregates every documented appearance of T4A in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.