I have a 2012 LT convertible. Has anyone else had trouble with their blend door on the heater and air conditioner breaking? I've had a nightmare problem with mine this summer. I believe I've got multiple problems. It first started back in June with the blend door not working so I had no air conditioner. Since I usually drive it with the top down I didn't take it in for repairs right away. Then a couple months ago I turned on the AC and had coolant blowing out of the dash vents. So now I have a heater core problem too. The biggest frustration is it's been sitting at the dealership for over 2 months not being repaired because they can't get a new windshield for it. You have to remove the windshield to take the dash out to do the repairs. I feel like screaming.