Air conditioning, tri-zone automatic climate control, individual driver, front passenger and rear seat settings

Years 2016–19 Models 1 Factory citations 4

Also documented for Cadillac Chevrolet GMC

Documented applications

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

2016–2019 Factory-verified

2019: 1SL, 1SN, 1SP: S

GM factory document — 2016 buick envision order guide copy gm authority, p.1, p.10.
GM factory document — 2017 buick envision order guide copy gm authority, p.1, p.12.
GM factory document — 2018 buick envision order guide copy gm authority, p.1, p.12.
GM factory document — 2019 buick envision order guide copy gm authority, p.1, p.13.

This page aggregates every documented appearance of CJ4 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.