Audio system, GMC Infotainment System, 8 inch diagonal multi-touch display, AM/FM/SiriusXM stereo, Bluetooth streaming audio, Android Auto and Apple CarPlay, voice recognition

Years 2019–22 Models 3 Factory citations 7

Also described as Audio system, GMC Infotainment System, 8 inch diagonalAudio system, infotainment system 3.x mid/high HMI, enhanced connectivity, voice recognition, navigation capable

Also documented for Buick Cadillac Chevrolet

Documented applications

Canyon — Second generation (GMT31XX) (2015–2022)

2019, 2021–2022 Factory-verified

2021: Elevation, AT4: S (printed as IOR, guide p.1); the 2021 guide names it in its notes; the upfitter lists name it high HMI, enhanced connectivity, voice recognition

GM factory document — 2019 chevrolet 19 coloradocanyon body builder sm u 2018aug01 1, p.10.
GM factory document — 2021 gmc canyon fleet order guide wayback, p.1.
GM factory document — 2022 chevrolet 22 canyon colorado electrical body builder sm en us 2021oct15, p.11.

Sierra — T1XX (2019–2026)

2019–2020, 2022 Factory-verified

GM factory document — 2019 gmc 19 sierra 1500 body builder feb 20, p.11.
GM factory document — 2020 gmc 20 sierra 1500 electrical body buil 1, p.12.
GM factory document — 2022 gmc 22 sierra 1500 new electrical body builder sm en us 2022jul20, p.12.

Terrain — Second generation (D2XX) (2018–2024)

2019 Factory-verified

SLT, SLT Diesel: S; letter O in the code as GM prints it

GM factory document — 2019 gmc terrain order guide copy gm authority, p.2, p.27.

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