The car has dual zone control sliders driver/passenger. The DRIVER'S side does not turn cold or hot, it stays the same unless you keep pressing on the slider.
I popped the dash cover and looked behind the panels to see the actuator.
It IS working and it turns when you move the slider, but it turns back to neutral (center) position
once you let go of the slider.
It doesn't matter which way you move the slider; up (hottest) or down (coldest) the actuator will turn to the correct position but it returns back to center position.
Would this be a problem with the Control Panel or the Blend Door Actuator?