IOS to IOU Navigation and HD Radio Upgrade Service (Global B)




Add Factory Navigation and HD Radio to your 2020+ IOS Infotainment Equipped GM Global B Vehicle!

This ship in service for your factory IOS Radio Module (CSM Module) adds full factory embedded navigation, HD Radio and GM back end navigation support for features like “send destination to vehicle” through OnStar for full proper operation. This brings your IOS radio up to IOU Navigation specs. It is ONLY necessary to ship in your Radio/CSM module to us for this service which we will properly retrofit program and send back with a Map Database SD Card. Again this is a ship in service for YOUR radio module, we do not provide hardware for this service.

You can see an awesome install and review of this service from our friends at Harness Dr by clicking HERE!

PLEASE NOTE: This service is ONLY compatible with GM VIP (Global B) Platform Applications equipped with an IOS Radio. This includes 2020-2023 C8 Corvette, 2021 Tahoe/Yukon/Suburban and 2020-2024 Cadillac CT4/5 etc. Global A applications have a different service found HERE. Also due to GM Decontenting related to the COVID-19 “Chip Crisis” certain 2021-2022+ Radios do NOT have the HD tuner chip in them. If you have one of these radios the HD Radio option will not show on the radio screen.

Please make sure you read through the ENTIRE description / Q&A section prior to ordering so you understand what this upgrade entails, if your vehicle is capable of it and what features are applicable.


Q: How do I know if this upgrade will work for me?
A: You will need to have the IOS (Mid Level) Radio without navigation but with an SD Card Slot. If you have IOS WITHOUT an SD Card slot you will need to swap out the existing USB hub for one that includes the SD Card Slot.  This service will NOT work on IOR or IO4/5/6 equipped vehicles. If you are confused as to which infotainment version your vehicle has you can check the QR code on your build label to see which radio you have this is generally on the Driver or Passenger Door Jamb / B Pillar area or the glovebox.

Q: I have a 2020 vehicle and would really like Wireless CarPlay and Android Auto as well as the NAV and HD radio is that an option?
A: Check under your specific vehicle type for a Wireless CarPlay / Android Auto Kit if its there as thats the better option as you’ll get everything AND a brand new radio with Wireless CarPlay / Android Auto to boot.

Q: How do you know which options I have?
A: We will configure the unit using the factory build data associated with your vin for options.

Q: Do I need to send my screen in or anything else?
A: Nope you just send ONLY the Radio/CSM module thats it.

Q: It’s really plug and play?
A: Yes your unit arrives back ready to go and pre registered with GM for infotainment feature continuity and plug and play simplicity. The ONLY thing you’ll have to do at install prior to inserting the SD Card is run all 3 “factory reset” functions on the radio let it reboot then install the SD card wait 10 seconds press the “NAV” icon and follow the prompts..

Q: Does this service include the map database?
A: Yes it sure does!

Q: How hard is the install?
A: Pretty easy for the majority of applications if you take your time and have basic Automotive knowledge. Most of the time the unit resides below the glove box so you must remove the lower insulator under the glove box, remove a small inverter (if equipped), possibly unplug a harness to move out of the way then unplug the old unit release it from its mount then install the new unit. We are over simplifying it here but its really not a bad install, generally you just need a good small automotive pick, a 10mm socket and some patience. You can click HERE for the installation instructions for our wireless CarPlay kit for the T1 trucks which will give you a good idea how this goes for most vehicles.

Q: Will my vehicle run without this module installed?
A: Yes it will! You may have a park assist or other errors if your vehicle is equipped because its looking for the radio to generate the tones for the park assist.


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