Today, I got fed up with the blend door actuator on my car clicking, and had to make a trip to a shop right across the street from the Chevy dealer. So I though, I'll get the part I need. The blend door actuator that went out on mine was the air inlet actuator. It is fairly simple to get to, you drop the glovebox. Look up near the top of the glove box door, you will see how to drop the glovebox all the way. There are two of the actuators they are easily accessible from the glove box. I believe the temperature svtuator is on the left, and the inlet actuator is further back on the right side. It is easier to drop the cover below the fan motor where the courtesy light is. Three clips. The you can reach your arm up there and feel for the 5mm screws, you just don't have the room to turn the wrench from the glove box opening. I didn't take any pictures because I couldn't due to cramped conditions, but one you see how yo let the glovebox swing all the way dow:WTF:n, its very straightforward. I believe in the dual zone climate controls there ate four actuators, two for for temperature control, one for the recirculate(air inlet) and one for the vent controls. The single zone climate control just condenses the two temp actuators into one. Anyway, it is an easy job to get to the two behind the glovebox, 15 minute job for the air inlet, 10 minutes tops for the temp control (?) if it is the first tome you have done them.