Lighting, interior ambient, instrument panel and front door trim

Years 2012, 2016–19 Models 2 Factory citations 6

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Also described as Lamp, interior, Ice Blue ambient, door handle area

Also documented for Cadillac Chevrolet

Documented applications

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

2016–2019 Factory-verified

all trims: S

GM factory document — 2016 buick envision order guide copy gm authority, p.2, p.11.
GM factory document — 2017 buick envision order guide copy gm authority, p.3, p.14.
GM factory document — 2018 buick envision order guide copy gm authority, p.2, p.13.
GM factory document — 2019 buick envision order guide copy gm authority, p.3, p.15.

Verano — Delta II (2012–2017)

2012, 2016 Factory-verified

2016: all trims: S; 2012: GM 2012 ordering guide, all trims: S

GM factory document — 2016 buick verano fleet order guide wayback, p.2.
GM factory document — 2012 buick verano online ordering guide copy gm authority, p.2.

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