I'll take a stab at it-- if the underside of the dash is anything like the grand cherokee, look at/for the blend door motor. There should be two, one driver side and one pass side. On the jeep, the driver side is an exercise in patience, and the pass side is accessed easily through the glove box.

They have a tendency to shear the plastic gears teeth right of, leaving the vehicle with no climate control but the fans/functions still work.

I'm curious now, im gonna look into this......