Blend Door?

[wstefanko]

I have a 99 Tahoe(old body style) that I just purchased from a friend. The rear a/c works just fine but the front is a little hit and miss. If I turn the a/c on to max it takes a little bit but it will work and get pretty cold then out of nowhere it will get a little warm then cold again. It will also will only blow cold on the first three notches on the cold side. Once you turn it a little more towards the warm it will get hot. I believe it is the blend door actuator. I started to take the dash apart to get to it. I can see it from under the dash and it is having a trouble moving back and forth(also makes a little noise). If I am on the right track can someone please tell me how to get to it????? I have most of the dash apart but it looks like I need to drill some rivets out to take the rest of the dash off? I am stuck. Thanks in advance.

 

[qlc1964]

no no!!!! that blend door is over the gas pedal on the side of the a/c heater housing.

and it has 2 or3 little srews holding it on. and the other one is behind the glove box

at the top if you have siwvel socket to get to the screws.
both of these are the same part number .

 

[wstefanko]

The one over the gas pedal controls the direction of the blower(floor/defrost). I can see that one functioning properly. If I look from under the dash I can see one towards the middle of the dash behind the cigarette lighters. That one is the one having issues. I did not see one behind the glove box. I cannot see how to get to the one in the middel without taking the dash apart?????

 

[wstefanko]

I found out it was the blend door acutator. It was located behind the aux power outlets on the dash. ONe screw was easy to remove the other too a but of elbow grease and a band-aid . I took the actuator off that controls the air direction and put it on the temperature door and all is well. Just have to order a new one. I am going to try to take some pictures and do a write up for all.