So had this issue with airflow through the vents of my truck. One day it would work fine then the next morning I would get in my truck and no air through the vents. We pulled the dash out checked the evaporator and heater core. Replaced blower motor and resistor. Then we replaced all the actuators along with recalibrating them. We checked each actuator to make sure they were working correctly. So then I turn my truck off and back on it would go back to none of the actuators working. We hooked each actuator to 12 volt source to make sure they weren't bad as well. What would be the next thing to look at? I first thought maybe the ac control cluster getting it replaced might fix it but not sure that's the problem. Im lost as to what could be causing the issue. The only thing I could think to do is get it reprogrammed at the dealership. Has anyone else come across anything like this. Any help would be greatly appreciated.