A/C works in back but not front?

[WH0DAMAN]

My A/C works great in the back but blows warm in the front. I'm thinking it has something to do with the servo to the vent door but I'm not sure. Anybody have this problem?

[jmildoc]

there is a blend door actuator... look it up and see.... I had to fix it on my car... not the yukon though thank god...

[our97ho]

thats funny cause in the hoe our back vents work sooo much better then front damn kids hoggin all the ac