Another blender door actuator question

[Mean Lx]

Hey, I have a 2010 3500 Laramie with dual climate control. I replaced the blender actuator behind the glove box and checked the two actuators behind the ac controls; the gears were good on both of them. I still have a clicking noise that sounds as if it's coming from underneath the center console. Is there another blender actuator that controls the AC to the rear cabin area? Thanks! James