If you can feel air blowing out the vents, then you may need to flush your cooling system.
I did see a bulletin on this vehicle that uses dexcool. If the vehicle was driven a long time with low coolant level, it can cause a rust like substance to form in the coolant system, heater core included. Can you check for coolant flow through the heater core?
I just wanted to add, you might check the heater control valve where applicable.
Tuesday, January 6th, 2009 AT 8:51 AM