Lamp, interior, ambient, door

Years 2014–16, 2018, 2023 Models 2 Factory citations 5

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Also described as Lighting, interior ambient, door

Also documented for Buick Cadillac

Documented applications

Bolt EV — first generation (2017–2023)

2023 Factory-verified

Premier: S; LT: not available; only in: Bolt EUV

GM factory document — 2023 chevrolet 23 bolt euv body builder sm en us 2022aug29, p.9.
GM factory document — 2023 chevrolet bolt euv fleet order guide wayback, p.1.

Impala — tenth generation (2014–2020)

2014–2016 Factory-verified

2014: 2SA: O (in PCY); 1LT, 2LT: O (in PCX); 1LZ, 2LZ: S; 2015: 1LT, 2LT: O (in PCX); 3LT: O (in PDN); 1LZ, 2LZ: S; 2016: 2LT: O (in PCX); 3LT: O (in PDN); 2LZ: S

GM factory document — 2014 chevrolet impala fleet order guide wayback, p.2.
GM factory document — 2015 chevrolet impala fleet order guide wayback, p.2.
GM factory document — 2016 chevrolet impala fleet order guide wayback, p.2.
2018 Single-source

in Y3W (GM Authority's 2018 Impala article, narrative package-contents section, which is not the credited 'Official RPO Changes' list)

This page aggregates every documented appearance of C9B in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.