On the 13.4in Infotainment screens has anyone heard or know of a way to get Apple CarPlay or Android Auto to take up the whole screen? Since GM is dictating what can and can't be full screen.
Android Auto and Apple CarPlay can easily scale up so it's not a limitation on the phone software. You can download Apple and Google developer simulators that scale them up to ridiculous resolutions and aspect ratios. So clearly it's GM forcing the phone projection to only the middle screen, but they let the built-in Google Maps take up the whole screen. Since the trucks are using Android you can enable the built-in developer options, but none of the settings it unlocks do much. Even the usb debugging option doesn't connect to a computer unless there's a specific HMI usb port for it.