When I use the USB and connect my iPhone 6 to my chevy Malibu 2016 not all my music shows up. When I look at artists and albums only a fraction of the artists and albums show. Though I can use Siri to play any song or album or artist that I want so it is connecting. I just don't like having to use my iPhone to select most of my music. How can I get CarPlay to show all of my artists and albums?