Battery, auxiliary, 730 cold-cranking amps

Years 2016–19 Models 2 Factory citations 10

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Also documented for GMC

Documented applications

Silverado HD — K2XX (2015–2019)

2016–2019 Factory-verified

not with the Duramax diesel; 2017: GM's 2017 Silverado 2500HD order guide; 2018: GM's 2018 Silverado 2500HD order guide; 2019: GM's 2019 Silverado 2500HD order guide

GM factory document — 2016 chevrolet silverado 2500hd fleet order guide wayback, p.4.
GM factory document — 2017 chevrolet silverado 2500hd order guide revised august 12 2016 copy gm authority, p.25.
GM factory document — 2018 chevrolet silverado 2500hd order guide copy gm authority, p.37.
GM factory document — 2019 chevrolet silverado 2500hd order guide april 20 2018 iteration 2 copy gm authority, p.36.

Tahoe — K2XX (2015–2020)

2016–2019 Factory-verified

2016: Police Vehicle, Special Service; the lists add 12V, 70 amp-hour; 2018–2019 from GM's 2018 and 2019 Tahoe order guides (GM Authority copies)

GM factory document — 2016 chevrolet tahoe police vehicle fleet order guide wayback, p.4.
GM factory document — 2016 chevrolet tahoe special service vehicle fleet order guide wayback, p.4.
GM factory document — 2016 chevrolet escalade escalade esv suburban tahoe yukon yukon xl electrical body builders manual service manual 2016 en us, p.9.
GM factory document — 2017 chevrolet escalade escalade esv suburban tahoe yukon yukon xl electrical body builders manual service manual 2017 en us 1, p.22.
GM factory document — 2018 chevrolet tahoe order guide copy gm authority, p.30.
GM factory document — 2019 chevrolet tahoe order guide copy gm authority, p.31.

This page aggregates every documented appearance of K4B in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.