Thanks again everybody.
So the air is still cold, so I guess that tells me that the door is stuck in the cold position?
I haven't got around to messing with the temp to see if it goes to heat yet, I only drive the car about once a week. When I do, I'll check it out.
That's good to know about it being a cheap and easy fix.
Ranzo, thanks a bunch. Let me check it out and I'll get back to you if I think I need it.
2010 GT, 5-speed manual, 3.73
1987 T-Top GT, 5-speed manual, 3.08