i have a 2016 and it does have Pandora on both the home screen and in Android Auto
The one on the Home Screen is through Bluetooth and the one in AA is only while connected by USB
There is a pic of the button on the 2017 volt mylink page Here
The one on the Home Screen is through Bluetooth and the one in AA is only while connected by USB
There is a pic of the button on the 2017 volt mylink page Here