Blend Door Actuator Clicking With Car Off

The actuator on my chevy impala is making a clicking noise under the right side of my dashboard by the glove compartment.

Blend door actuator clicking with car off.

Sometimes the fix needs recalibration and sometimes you need to replace the part that is broken. First the electric motor can burn out rendering the unit non responsive so nothing changes when the temperature or. Sometimes the clicking will start randomly even though the ac controls are not touched and will often not stop. The clicking noise continues even after the car is off.

It s most likely the actuator motor for the blend door in the a c ducts behind the dashboard especially if the noise seems to. If your vehicle is only releasing cold air or if you are not able to change the airflow it may be because of a malfunctioning actuator. A blend door actuator is made up of an electric motor that turns a plastic gear set in one direction or another which is connected to an air control door pivot at the final drive of the unit. An actuator can become faulty if the plastic gear set turns out to be fragile and it breaks.

I won t be able to have a mechanic look at it until the weekend around 5 days from now. A blend door actuator is linked to an air control door pivot found on the last drive of the unit. Use a test light or power probe and verify that the proper signal is being received to the actuator based on your wiring diagram. My car has an automatic transmission.

An actuator can go bad in of two ways. A plastic gear set is frequently rotated from one side to another by the electric motor. Is this draining my car battery. The blend door actuator is located behind the glove box and a sign of failure is an audible clicking sound when you adjust your climate controls.