i have an 03 sedona and the heat does not work in the front of the cabin only. the heater in the rear works fine. is there a fuse or relay that controls the damper for temperature? ("heater" fuse is fine) or a wiring harness i should check? any help is greatly appreciated! please help me solve this problem before it gets any colder!

If this is the same problem that I had, simply open up the glove box or remove the heat and a/c panel until you have access to the sliding lever that is suppose to control hot or cold. Mine was stuck, I simply moved it down into the hot position, heat worked fine afterwards.