This video describes the basic task of replacing one of the cooling system blend door actuators. As described in the video, we have a 2010 Traverse that all of a sudden started only blowing HOT air into the passenger seat. After days of internet study, I found that it was most likely the "blend door actuator". I found a cool parts diagram of the AC system, so knew where to look. After finding the bad actuator, I removed it, ordered the part, and am ready to install the working part.

Diagram: http://www.tonkinonlineparts.com/show...

RockAuto Part: http://www.rockauto.com/catalog/morei...