Anybody know much about A/C?

[AKMark]

Well, with temps above 100, I tried to use the A/C and the compressor is running, but I get no cold air through the vents. I know the blend door actuator is working, because when I move it to hot, it burns me, but in max cool, it's just as warm as the outside air. I have plenty of air coming through my condenser, and I have verified the low side is close to where it should be, 35psi. I have not put a guage on the high side yet, but will try to do so this week.

When I turn the A/C on, the low side line gets cold to the touch, not freezing, like some of mine have in the past, but cool. The Hi side line gets hot, which is what is supposed to happen, I think.

If anyone has any ideas what I should try next, I'd appreciate it. This is on my 97 Suburban, with the TD.

The only thing I can think of is that moisture is in the lines and I may need to purge and refill it to make it work.

Thanks for the help in advance, and yes if I were up there right now, I wouldn't worry about it, but I'm not and will have to put up with a full summer here, and YIKES is it hot.