I am also in need of having this replaced, I called the dealer and they quoted me $300 to have it replaced. That included the actuator also. Soon as I get the money I'm going to take it in and have them do it. I think the price of over $1000 might be for the dual climate control system perhaps?

The one instructions I found on here mentions cutting part of the dash to help get the actuator out, I'm not all about doing that. I've found that when I would switch to hot/cold that if I crank the blower up to high it actually stops the clicking noise and engages the right temperature setting.