How do I fix or test the air mix actuator and where in the car is it located.

Try these links. Let us know if you don't find what you need:

https://www.gmforum.com/t280192/

http://trialsnuts.com/ecc.pdf

What problem are you experiencing?

I have to turn the temp up to 26-27 C sorry I am from Canada to get heat from heater . I installed a 195 stat the engine heats up good.

Don't be sorry you come from Canada. I do too.

I set my heater between 26 and 28 when it gets really cold out. When you set it to 32, do you get a lot of heat?

I love Canada just the celcus bugs me. I will try tomorrow to turn the heat to 32 and let you know. Thanks a lot for the help.

I turned the temp up to 31 C thats as hi as it would go the air that comes out at floor level above trans pan is hot enough but not much volume for the speed of fan, high as it would go.Could the HVAC be the culpret. duncan

The two links I provided in an earlier response to you have a lot of information related to your HVAC system. Go through those links and see if anything in your car looks as though it is not functioning as it should.

Hi all I took the air compressor hose and blew the pine cone needles and dust off the vents under hood sunday, now there is a lot more air comming into the inside of our car. Thanks for the help duncan

If it was that bad you should pull the windscreen cowl vent off so you can clean that area out properly. It is not difficult to remove and replace it.

Well today I found a heated shop to check out the air actuator. I pulled the glove box and took off the cover under glovebox, I looked in and saw a mind boggling sight. I found what I think is the air actuator a small box looking thing with a shaft on top with a threaded rod going toward the drivers side mounted to another arm .I tried pushing the rod each way with no movement. Then I started the engine and pushed the temp button and watched the rod. It moved very slowly in one direction then I pushed the temp button to change the temp the rod moved in the oposite direction with no stoppage. When I first saw the rod it had a fairly large looking hose rubbing on the rod so I reposioned the hose . Is this the way the air actuator suposed to work can it be taken apart and lubed. thanks