Airflow selector not working

[frebo]

2005 4R sport V8 - Airflow selector on the center HVAC console (farthest right module) does not work. No lights & will not change the airflow. The other two modules work perfectly. Any Suggestions? Only one cable.

 

[BlackWorksInc]

I would aquire the wiring diagram for the unit, test the pins for continuity, proper function, and see if they share a common power line or seperate lines. If the unit tests bad, you'll probably have to replace the entire assembly. I know its not what you wanna hear, but the HVAC controls are usually one component.