RA4 Only--Where's My 3-D Map View?
Tap Options on main navigation screen.
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"I didn't receive a map disc"
The Map disc is pre-loaded on the unit. To access the map disc, navigate to the settings and eject the map disc. The screen should fold out and you'll see the map disc drive eject the cd.IOR to IOU SD Card speech and map data fix.
IOR to IOU SD Card speech and map data fix. Google Drive link for both zipped up folders. https://drive.google.com/drive/folders/12RVHdBoYyg5ylBx1hyVCAA4eiX-PEiid SD card should look like this in Windows File Explorer. Contents should look like the ...SD Card error fix with IOU upgrade
With the GMC IOU upgrade, after install your SD card, if you get a Map Card Read Error, go to "Settings" the click "Return to Factory Setting." This will cause the map card to read.The navigation display doesn’t accurately follow me down the highway/Issue with hearing turn-by-turn directions
If you're having any of the issues below, you may need to install the VSS kit (brown connector) which should have been included in your kit along with a set of pictured instructions. Not all vehicles require a VSS kit. If you vehicle already have ...RA4/RA3 troubleshooting steps
RA4/RA3 Radio unit won't power on? After installing your 8.4 RA4 or RA3 head unit, and turning on your vehicle, you should get a splash screen right away. If your screen is completely black, with no backlight, with the engine on, put your ear near ...