auto climate control blows only in defrost and foot well modes

[davecham]

Hey guys, I've had this 2004 GMC Sierra 2500 6.0 L gasser for about a year now. It has the auto climate control with the push button selector for the blower direction control. It just recently started blowing out only the defrost and foot well vents, but it won't blow out the face vents. Any ideas??

[z_stephensrc]

Yes, I had the same problem. There is a door that is operated by a electronic switch. I forget what it is called but that switch has to be replaced. I had a local shop do it.

[davecham]

Yes, I had the same problem. There is a door that is operated by a electronic switch. I forget what it is called but that switch has to be replaced. I had a local shop do it.

Yeah I here it's a real pain in the butt to get to. How much did that cost you?

[txab]

It's called an actuator motor

[davecham]

Ok so I figured it out! It was the blend door actuator...it had apparently become unplugged because it wasn't even plugged in all the way in the first place. Everything works fine now. Hope this helps anyone else in the future with a similar problem.