I have somewhat of a similar situation to some of the other postings but its all the Android Auto Apps that are being affected. Using a Samsung S5 Marshmallow in a 2016 Chevrolet Silverado with Android Auto downloaded. Since the marshmallow update, I plug the phone up and in the infotainment screen shows connected to the phone and AA shows connected to the Projection Icon. Will play a song like from Pandora then all apps stop working, including Google maps. Music Apps show "Waiting for Connection" and other music apps just spin trying to connect to something. Right now AA is useless. Anyone have any ideas??