First the electric motor can burn out rendering the unit non responsive so nothing changes when the temperature or.
Blend door actuator motor.
Like any mechanical device a blend door actuator will eventually fail.
A certain method to move a blend door a couple of systems would take more than a little time and effort to control.
It is controlled by a blend door actuator which is a small electric motor.
Blend door actuator replaces 89018365 604 106 52402588 fits 1994 2012 chevrolet chevy gmc silverado 1500 and 2500 tahoe sierra air door actuator hvac blend control act 4 3 out of 5 stars 196.
Usually it is the actuator motor that has failed when the actuator is no longer working.
An actuator can be powered by vacuum or by a small motor mounted within the heat and air assembly.
It s a fairly simple process to take that part of the ac unit apart and replace the old motor with a new one.
What is blend door actuator replacement.
The blend door or vent door mixes warm and cool air to be sent to your vents.
Replacement parts to fix the problem may be as little as a few dollars but the labor charges to replace it may go into the hundreds.
An actuator can go bad in of two ways.
When you turn the knob on your dash to the desired temperature the actuator moves the blend door to achieve the proper mix.
Also called hvac actuators these small electric motors control the flow and blend of hot and cold.