Could be related to new iOS software.
There could also be a mylink software update for your car. But I'm guessing the dealer will charge you ~$100 if you're out of your bumper to bumper and didn't buy GMPP.
There could also be a mylink software update for your car. But I'm guessing the dealer will charge you ~$100 if you're out of your bumper to bumper and didn't buy GMPP.