Just heads up my 2013 ZL1's 7" touch screen and USB is dead only after 600 miles of use. :(. Funny thing is my 2011 SS had it's USB go out, just had that replaced 4 weeks ago. Media module was fried. I'm guessing this is the case here too. My guesstimate is, there is a problem with power feed back from devices like Iphones. They probably need a fusible link between the usb and the module, or something to handle a power coming back over USB. Both times seemed to happen right after I unplugged my Iphone while it was playing. Back to the dealer with my second Camaro for the same problem, haha.
At least the exhaust sounds good on the ZL!