Audio system, Buick Infotainment System, AM/FM stereo, SiriusXM, with 8" diagonal color touch screen, 2 USB ports inside center console, Bluetooth streaming for audio and select phones, phone integration for Apple CarPlay and Android Auto

Years 2014–19 Models 7 Factory citations 14

Also described as Audio system, Buick Infotainment System, AM/FM stereo, SiriusXM, 8 inch diagonal color touch screen, 2 USB ports, Bluetooth audio streaming, Apple CarPlay and Android Auto capabilityAudio system, Buick IntelliLink (Buick Infotainment System from 2018), AM/FM stereo and SiriusXM, 8 inch diagonal color touch screenAudio system, Buick IntelliLink radio, AM/FM stereo, 2 USB ports, Bluetooth, Apple CarPlay and Android AutoAudio system, Buick IntelliLink radio, AM/FM stereo and CD player, USB port, Bluetooth audio streamingAudio system, Buick Infotainment System, AM/FM stereoAudio system, Buick IntelliLink radio, AM/FM stereo and CD player

Also documented for Cadillac Chevrolet GMC

Documented applications

Enclave — C1XX (2018–2024)

2018–2019 Factory-verified

Base, Essence, Premium: S; the guide notes it does not include U2K SiriusXM Satellite Radio; replaced by IOS for 2020, so 2019 from GM Authority's 2020 changes page

GM factory document — 2018 buick enclave fleet order guide wayback, p.1.

Encore — Gamma II (2013–2022)

2018–2019 Factory-verified

all trims: S; letter O in the code as GM prints it; GM prints no zero form

GM factory document — 2018 buick encore order guide copy gm authority, p.1, p.14.
GM factory document — 2019 buick encore order guide copy gm authority, p.1, p.12.

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

2016–2019 Factory-verified

2019: 1SV, 1SD, 1SL, 1SN: S; letter O in the code as GM prints it; GM prints no zero form; the 2016 guide adds a CD/MP3 player and SD card reader, the 2017–2019 guides Apple CarPlay and Android Auto

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.

LaCrosse — E2XX, 3rd gen (2017–2019)

2017–2019 Factory-verified

2019: Base, Preferred, Sport Touring, Essence, Premium: S; the 2018–2019 guides call it the Buick Infotainment System

GM factory document — 2017 buick lacrosse fleet order guide wayback, p.2.
GM factory document — 2018 buick lacrosse order guide copy gm authority, p.1.
GM factory document — 2019 buick lacrosse order guide copy gm authority, p.2.

LaCrosse — Epsilon II, 2nd gen (2010–2016)

2015–2016 Factory-verified

2015: 1SV, 1SB, 1SL, 1SP: S; 2016: next generation system with 2 USB ports (GM Authority 2016 changes); letter O in the code as GM prints it; GM prints no zero form

GM factory document — 2015 buick lacrosse fleet order guide wayback, p.2.

Regal — E2XX (2018–2020)

2018 Factory-verified

letter O in the code as GM prints it; GM prints no zero form

GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.

Regal — Epsilon II, 5th gen (2011–2017)

2014, 2016–2017 Factory-verified

new for 2014, with Bluetooth (GM's 2014 list); 2016: 1SV, 1SL, 1SN: S; next-generation screen and 2 USB ports for 2016 (GM Authority 2016 changes); adds Apple CarPlay and Android Auto (GM's 2017 list)

GM factory document — 2016 buick regal order guide copy gm authority, p.1, p.14, p.36.

This page aggregates every documented appearance of IO5 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.