Your HVAC system has two blend air doors. Based on the position of the blend air door determines if you get heat or AC. One door is for the passenger side and one the driver's side. What you need to do is check to see if the door is closing when you lose AC.
The blend door is located on the heater box, under the dash. It isn't easy to get to, but that is what needs to be done.
Thursday, September 5th, 2013 AT 5:31 PM