After playing around with the Android Auto App, and the MyChevrolet App and the MyLink thing that also has a mind of it' own, I have totally given up on trying to get the touch screen in the Spark for phone/audio/navigation duties. Nothing worked properly. Internet searches about Android Auto as an example yield many bugs that Google just can't figure out. To complicate things, since I drive a tractor trailer for a living and have to use a hands free headset(BlueParrott 450) that device paired on my phone had a running argument with the myLink and Android Auto. They seem to battling for supremacy, with none of the systems strong enough to overule the others.
Soooo I am have gone back to isolating the phone by uninstalling all the apps, just charge the phone on a separate phone charger and use the RCA plug on the phone into the jack. Since I drive 100,000 miles a year I am picky about my navigation systems, a Garmin GPS is light years ahead of any Google maps application. So that is over in the corner, if I am in the mood for internet radio it goes through the RCA jack, and the radio in the car is, just that a radio. Everybody is happy, and I use my BlueParrott headset just like in the truck. Better and clearer fidelity anyway.