Headlamp control, automatic on and off

Years 2014–16, 2019, 2023–27 Models 3 Factory citations 9

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Also documented for Buick Chevrolet

Documented applications

Acadia — first generation, Lambda (2007–2017)

2014–2016 Factory-verified

the 2008–2009 T82 lists point to T83 as its replacement.

GM factory document — 2014 gmc acadia fleet order guide wayback, p.3.
GM factory document — 2015 gmc acadia fleet order guide wayback, p.3.
GM factory document — 2016 gmc acadia fleet order guide wayback, p.3.

Canyon — Third generation (VSS-T) (2023–2027)

2023–2027 Factory-verified

S on all trims

GM factory document — 2023 gmc 23canyon electrical body builder 2023march13, p.12.
GM factory document — 2024 gmc canyon fleet order guide wayback, p.1.
GM factory document — 2025 gmc canyon fleet order guide, p.4.
GM factory document — 2026 gmc canyon fleet order guide, p.6.
GM factory document — 2027 gmc canyon fleet order guide, p.6.

Terrain — Second generation (D2XX) (2018–2024)

2019 Factory-verified

all trims: S

GM factory document — 2019 gmc terrain order guide copy gm authority, p.7, p.38.

This page aggregates every documented appearance of T83 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.