IO5 is the GM Regular Production Option (RPO) code for the non-navigation HMI infotainment configuration: 8-inch touchscreen with MyLink, IntelliLink, or first-generation CUE, but without factory embedded navigation. The vehicle still has full infotainment functionality (Bluetooth, audio sources, backup camera, on HMI 2.5+ wired Apple CarPlay and Android Auto) — it just doesn’t have GM’s built-in map database.
IO5 is the most common infotainment configuration on 2014–2019 GM full-size trucks and SUVs (Silverado, Sierra, Tahoe, Suburban, Yukon, Escalade) and many midsize vehicles. It is paired with the HMI module and the separate radio/ACM module.
Common upgrade paths from IO5:
- IO5 → IO6 navigation retrofit — replaces the HMI with a navigation-equipped variant programmed to the vehicle’s VIN. Adds embedded factory maps and turn-by-turn guidance.
- 2.0 → 2.5 CarPlay/Android Auto upgrade — for 2013–2015 IO5 vehicles, swaps the HMI 2.0 + matching radio + USB hub for HMI 2.5 hardware that supports wired CarPlay/Android Auto.
You can confirm whether your vehicle has IO5 by locating the SPID (Service Parts Identification) label, typically in the glove box, and looking for the “IO5” code. IO5 vehicles will not have the App Shop home screen used by CSM-based infotainment.