Lighting, interior, overhead courtesy lamp

Years 1973–87, 2014, 2017–19, 2023–27 Models 8 Factory citations 19

Query this via API →

Also described as Dome/courtesy roof lampLamp, domeLighting, interior overhead courtesy lamp with OnStar controls

Also documented for Buick GMC Saturn

Documented applications

C/K Trucks

1973–82 Confirmed

—

C/K pickup — Square body (1983–1991)

1984–1987 Factory-verified

GM Heritage factory kit — 1984 Chevrolet Truck, p.35.
GM Heritage factory kit — 1985 Chevrolet Truck, p.34.
GM Heritage factory kit — 1986 Chevrolet Truck, p.158.
GM Heritage factory kit — 1987 Chevrolet Truck, p.49.

Colorado — Third generation (2023–2027)

2023–2027 Factory-verified

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

GM factory document — 2023 chevrolet 23colorado electrical body builder, p.10.
GM factory document — 2024 chevrolet 24colorado electrical body builder manual 18272478 2023oct09, p.11.
GM factory document — 2025 chevrolet colorado fleet order guide, p.29.
GM factory document — 2026 chevrolet colorado fleet order guide, p.33.
GM factory document — 2027 chevrolet colorado fleet order guide, p.32.

Cruze — second generation (2016–2019)

2018–2019 Factory-verified

2018: sedan S: L, 1SA, 1SB; 2019: sedan S: L, 1SB; hatch S: 1SB

GM factory document — 2018 chevrolet cruze order guide copy gm authority, p.39, p.84.
GM factory document — 2019 chevrolet cruze order guide june 1 2018 copy gm authority, p.29, p.35, p.68.

S-10 pickup — First generation (1982–1993)

1982–1983 Factory-verified

GM Heritage factory kit — 1982 Chevrolet S 10, p.8.
GM Heritage factory kit — 1983 Chevrolet S 10, p.31.

Spark EV — M300 (2014–2016)

2014 Factory-verified

1LT, 2LT: S; with OnStar controls

GM factory document — 2014 chevrolet spark ev and spark fleet order guide wayback, p.2.

Spark — M400 (2016–2022)

2017–2019 Factory-verified

all trims: S; 2018 from GM's 2018 order guide

GM factory document — 2017 chevrolet spark order guide copy gm authority, p.2, p.15.
GM factory document — 2018 chevrolet spark order guide copy gm authority, p.3, p.21.
GM factory document — 2019 chevrolet spark order guide copy gm authority, p.3, p.21.

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

2025–2026 Factory-verified

all trims: S

GM factory document — 2025 chevrolet trax fleet order guide, p.3.
GM factory document — 2026 chevrolet trax fleet order guide, p.3.

This page aggregates every documented appearance of C91 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.