Just bought a 2010 F150 Lariat from our Toyota dealer here in Calgary. Seems to be fairly good so far, ended up finding your forum because of the passenger side started blowing really hot air. I wasn't able to regulate it at all, the driver side was fine. Thanks to everyone here I found out about the bypass doors and the actuators. Yep, kind of nasty to change the one for the passenger side but I was still able to do it in over three hours. If I every need to do it again I'm thinking more of about 2.5 hours. A lot quicker than what the dealer says. Thanks everyone.

 

Welcome to the site Don. How about posting a few pics to show it off.