Air filtration system, pollutant and odor

Years 2014, 2017–19 Models 2 Factory citations 4

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Also described as Air filtration system

Also documented for Buick

Documented applications

Sonic — first generation (2012–2020)

2017–2019 Factory-verified

all trims: S

GM factory document — 2017 chevrolet sonic order guide copy gm authority, p.63.
GM factory document — 2018 chevrolet sonic order guide copy gm authority, p.69.
GM factory document — 2019 chevrolet sonic order guide may 4 2018 copy gm authority, p.61.

Spark EV — M300 (2014–2016)

2014 Factory-verified

1LT, 2LT: S; includes an odor reducing system

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

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