I have a 2015 Traverse. I previously owned a 2014 Equinox in which a USB drive played music without a hitch. It also works fine in several other vehicles. When I start the car it takes about 20 to 30 seconds for the USB to start. When it starts it is always with the same song. I have to push the forward button to get to a different song as well as restart shuffle every time.
A larger problem is that it won't play any of my ITunes songs which is the majority of my music. It only plays MP3's from other sources.
None of the problems happen in a 2013 BMW 325I/2014 Ford Focus/2014 Eqinox/2010 Ford Edge.
A simple software update would solve the problem.
Let's get going Chevy.