The blend door is located near the heater core in the HVAC system. I have attached pictures for you to view. Removal is a big job that requires partial dash removal. You can check to see if the door is opening and closing properly. (See attached).
Before ripping into that, check to make sure the coolant is full. Also, with the engine hot, running, heater on high, make sure both heater core hoses are hot.
Let me know what you find.
Tuesday, January 4th, 2011 AT 7:42 PM