IO6 (RPO IO6 — Navigation-Equipped HMI Infotainment)

RPO Codes

The GM RPO code for the HMI infotainment configuration with embedded factory navigation, found on premium-trim 2014–2019 GM vehicles.

IO6 is the GM RPO code for the HMI infotainment configuration with embedded factory navigation. The hardware is the same 8-inch touchscreen as IO5 — what’s different is the HMI is a navigation-equipped variant with the GM map database installed, and the SPID label calls out IO6 instead of IO5.

IO6 includes everything IO5 has (Bluetooth, audio sources, backup camera, on HMI 2.5+ Apple CarPlay and Android Auto) plus:

  • Built-in GM map database with turn-by-turn directions
  • Voice destination entry
  • Points-of-interest search without needing a phone

GM has discontinued map database updates for HMI-based IO6 systems; the final map release was in 2023. Vehicles with IO6 can still order the final available map update from WAMS.

An IO5 vehicle can typically be upgraded to IO6 by replacing the HMI with a navigation-equipped unit programmed to the vehicle’s VIN. This is one of WAMS’s standard retrofit services.

Vehicle Applicability

Premium-trim 2014–2019 Chevrolet, GMC, Cadillac, and Buick vehicles where navigation was a factory option. IO6 typically appeared on LTZ, Denali, Premier, High Country, and most Cadillac trims.

Also known as: IO6, RPO IO6, factory nav, HMI navigation

Related Terms

  • IO4 — The GM RPO code for the base 4.2-inch color display infotainment configuration found on entry-level trims of 2014–2016 GM trucks and SUVs.
  • IO5 — The GM RPO code for the non-navigation HMI 2.0/2.5 infotainment configuration found on most 2014–2019 GM vehicles.
  • HMI — The primary infotainment computer in most 2013–2020 GM vehicles with MyLink, IntelliLink, or first-generation CUE.
  • MyLink — Chevrolet's branded infotainment interface, used on HMI-based vehicles from 2013 onward.
  • IntelliLink — GMC's and Buick's branded infotainment interface, used on HMI-based vehicles from 2013 onward.
  • CUE — Cadillac's branded infotainment interface. First-generation CUE (2013–2016) used HMI hardware; later CUE branding sits on CSM hardware.
  • SPID label — The physical sticker on a GM vehicle that lists all of its RPO option codes. Typically located in the glove box, trunk floor, or door jamb.
  • RPO — GM's three-character codes identifying every factory-installed option, package, and feature on a vehicle. Critical for module matching and parts ordering.

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