Blend Door Actuator

I do have dual temperature control. As for whether it was the actual blend door actuator, the one that I removed and replaced was the one immediately above the cabin air filter directly behind the glove box. See the attached photo. When I had the old actuator off and disconnected, I did not hear the clicking noise. However, I didn't open close the doors or start/stop the car to see if I could trigger the clicking noise with the part off. Once I put the new part on, I opened/closed the door and started/stopped car to test it, and that is when I discovered that it still made the clicking noise. When it was making the noise, that is when I put my hand on the replacement part while it was installed and could feel it ticking. I didn't put my hands anywhere else to see if I could feel it other than there, but it did feel as though it was coming from this part. Given that the replacing it did not stop the ticking, I removed the replacement part and put the old one back on. It will make the clicking noise when I open the door and at random just sitting there. I noticed for the first time yesterday that when I adjusted the A/C, it made the clicking noise. It clicks 8-10 times then stops. This clicking problem only started a week ago.

Thanks for the assistance. I will return the part and try a different one. I will also test as you said with the actuator uninstalled to make sure that there is no clicking without the actuator connected to be sure it is this actuator that is causing the clicking issue.