Hello, I'm new to this forum so bear with me. I have a 2007 Pilot EX 6 Cylinder with an air conditioning problem. I have what seems like heated air blowing from the front vents and cold air from the rear vents. No matter what temperature setting I place the front dial control on, It blows hot air. The only releif from heat is when I turn the unit completely off. I purchased the vehicle a year ago with a little over 100,000 miles on it, so I don't know what service (if any) has been performed on the car. The air seemed to be working fine until a week ago. When I turned the heat on for a while and then tried to go back to cold air, it would only blow hot air. I turned it off. Got in the next day and the cool worked fine until I turned the heat back on. Since then it has only blown hot air. However, the rear unit blows ice cold air just fine. I've tried to readjust all the controls to no avail. Any help would and will be greatly appreciated.