I've been dealing with iPhone/radio issues since I got my 2013 in Sept. 2012. I worked with infotainment for over a month and the only solution was to get a 2014 or newer car 
Basically when I pair the phone, and try to use Siri to play music, sometimes it works, sometimes the radio hangs, sometimes the phone hangs, etc. The phone will be playing but no music from the car. Sometimes it gets so bad the only solution is to power the car off and back on.
I tested a 2014 which has Siri Eyes Free for an hour at a dealership and it worked perfectly, but of course I cannot upgrade to that radio.
I'm pretty fed up that I cannot simply listen to music. I tried using USB but that has a wealth of different issues, and Siri messes it up again.
I think Siri screws up the Volt because the Volt thinks it is a phone call and switches the software stack quickly and wasn't tested for this. Siri Eyes free works entirely differently, never switching to phone mode and just working.
It's depressing that a car I paid $45,000 for 2.5 years ago is now worth $16,000 and I cannot even reliably nor safely use it with my phone.
Basically when I pair the phone, and try to use Siri to play music, sometimes it works, sometimes the radio hangs, sometimes the phone hangs, etc. The phone will be playing but no music from the car. Sometimes it gets so bad the only solution is to power the car off and back on.
I tested a 2014 which has Siri Eyes Free for an hour at a dealership and it worked perfectly, but of course I cannot upgrade to that radio.
I'm pretty fed up that I cannot simply listen to music. I tried using USB but that has a wealth of different issues, and Siri messes it up again.
I think Siri screws up the Volt because the Volt thinks it is a phone call and switches the software stack quickly and wasn't tested for this. Siri Eyes free works entirely differently, never switching to phone mode and just working.
It's depressing that a car I paid $45,000 for 2.5 years ago is now worth $16,000 and I cannot even reliably nor safely use it with my phone.