I have an 08 STS and there has been a clicking noise inside the dash (sounds like a motor trying to do something) whenever the floor vents are activated. I have seen a few things about blend door actuators on the internet and what not, but I haven't found anything on the forum about this particular issue. It only happens whenever the air is coming from the floor vents. So if I turn it off, it still clicks nonstop because air still comes from the vents. I imagine I will probably have to remove the entire dash or something ridiculous, but if anyone has any info on what I would need to do, I would greatly appreciate it. Thanks!