You need to replace your whole distribution box. I just did this repair on my daughter's 2010 kk. The actuators work fine, but no heat. That box has 4 movable dampers. The bottom 2 are controlled by the temp knob (lower actuator)and either direct the air through or around the heater core. The top 2 conteol what vents the air comes out (upper actuator) and is controlled by the mode knob. What happens us the top damper seals melt and gum up the works and then the actuator chews up the gear on the side trying to move it. No way to fix this.
This took me about 6-7 hours to do in the garage last Saturday . Part is about $180 on amazon. Also, buy the seal kit and just use the pieces you need. You will need it.
MOPAR 68004022AA HOUSING (68004022AA)
MOPAR 68003995AA SEAL KIT
You will also have to disconnect the heater hoses in the engine bay and remove as much of the coolant from the heater core as possible. We gently blew out the coolant into a bucket via some tubing. It takes time and patience, but you can do it with some basic tools.
Pop off the top panels, center stack pieces radio, center console, footwell pieces and side panels. Remove 4 bolts up top, remove top vents, all bolts in center, bottom 2 side bolts. Remove 4 steering wheel bolts and 2 silver bolts under there also. Lower the column. Pull and wiggle whole dash loose
Hardest part is plastic post on drivers side you cant see it and holds everything in place. Keep pulling and wiggling. It ia also hard to get back in. Carefully loosen all wires. I did not remove the dash.
Undo clips and screws on distribution box and pull up and out to the passenger side. Replace in reverse order after swapping out all your actuators and install new seals.
One key is to make sure you seat the the box into the back 2 tabs. My advice is cut them off on bottom part. We thought ours was in, but left a small gap and we broke the plastic tab/clip on the left side which prevented us front snugging those two together. I just used some wadding to prevent the leaking. I didnt find out until we tested it after everything was back together![emoji34] not going to redo that! This was a big issue because it has been below zero here in michigan for 3 weeks now! Voila, all works as should.
Good luck.
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