Can someone point me to how I can go under my glove box and look through that hole where the air mix actuator is, any diagrams or pictures would really be helpful. I would like to move the actuator arm to HOT which I believe is toward the passenger side. To see if I can get heat out of the drivers side vents, the passenger side vents put out great heat. So I was going to see if I could force it to be hot and if the problem was the actuator itself. What else could I be looking for. A mechanic told me it was the heater core being gummed up, but if that was the case then I would get no heat right out of the passenger side also? Please help troubleshoot this problem so I can get some heat this winter.

Wrong area. You have heat on the passenger side, so that air mix actuator is not the problem. You will need to check the one on the drivers side. You will need to remove the hush panel and look up to the right of the steering column.

What should I be looking for? A white **** of some kind. or an arm?

I don't have any pictures of that area. Toddster would be a good person to ask about that.