Knocking noise in the dash board

Hi and thanks for using 2CarPros.com.

Often times, a clicking is attributed to a faulty temp, mode, or air flow actuator. These actuators are responsible for changing air flow directions, providing fresh air, or temperature control. Inside the actuators are plastic gears. What happens is the teeth on the plastic gears strip. As a result, you hear plastic gears clicking together until it finally turns and the cycle is complete.

Take a look at this link. It shows how in general a blend/temperature actuator is replaced. Also, it describes what happens and what you hear. Read through this and let me know if you feel it mirrors the symptoms. If it does, we need to determine which actuator is bad and then I can provide directions for replacement.

https://www.2carpros.com/articles/replace-blend-door-motor

Let me know your thoughts.

Take care,
Joe

Thank you! I will follow the link.

You are very welcome. If you need help or directions, feel free to let me know.

If I don't hear from you, have a good Thanksgiving.

Take care,
Joe