I just traded in my Silverado for a 2012 SV and I'm very happy with that decision. One issue-my iphone won't charge. I've plugged in the USB charger that I always used in the silverado in both cigarette lighters. The phone battery icon lights up green and the lightning bolt appears but 30 minutes later the phone battery has gone from 60% to 62%-and that's without me using it. I tried switching out cords but no change. Anyone else have this issue? Thank you.