I was having a Bluetooth connectivity issue with my 2013 Chevy Volt. I brought the car in and we saw the car needed a software update. We were hoping the software update would address the issue. The connectivity issue was still there immediately after the update, but the next day, I was able to use Bluetooth again. So it's fixed! The only frustrating issue is the way these software issues are diagnosed--there seems to be no way for technicians to tell you that it's working or not.