Here is how you can simulate the MyLink Touch system for much less money.
There was a thread on this forum describing using a Blackberry Bluetooth AD2P (Advanced Audio Distribution Profile - standard defining how high quality audio can be streamed from one device to another over Bluetooth) Receiver / Gateway, however, that device has been discontinued and is pricey if it can be found. A substitute AD2P device, one of many I suspect, is the GOgroove BlueGate Wireless A2DP Bluetooth Audio Music Adapter & Receiver (
). I installed this in my 2012 Volt (no navigation, no MyLink Touch) and it works great streaming audio from my phone (Samsung Galaxy SII) to the Volt via the aux-in. It comes with a USB charger as well for the device. In my case, I have a inexpensive USB hub connected to the Volt's USB port, that has a flash drive (USB audio) and this charger plugged into it and the USB charger continually charges the Bluetooth receiver. The receiver of course is plugged into the aux-in, which is right next to the USB port in the Volt's center console. I paired my phone to the car and set it for phone audio. I then charged the GoGroove device (seems to be important) and paired it to my phone and set the GoGroove device for media audio. Once this is done, then audio from the phone is streamed to the GoGroove and then to the Aux-In and if you need to use your phone, it takes precedence as normal and silences the audio system allowing the phone call to take place.
Anyway, for those who wanted but couldn't get the MyLink Touch for some reason, which included myself, this is a workaround that is decent. You don't have the select few icons (Pandora, Stitcher) on the center video display but you can use those apps just the same, any any others on your phone.
I haven't lived with the device long but the audio is acceptable and it seems to work fine with the phone bluetooth. However, as a caveat, which other Bluetooth AD2P receivers may not have, is that when I want to use it upon entering the car, I have to re-establish the bluetooth connection from my phone to the receiver and then power on the receiver.