I have a 08 Suburban, the ac works fine for a while , then the air quits coming out of the dash vents, it doesn't get hot, or anything, it just quits coming out of the dash vents. I shut the AC off for about 4 mins, then you can feel the air coming out of the dash vents again, turn on the AC again and its good for about 20 mins the it happens again. I just don't want to start throwing parts at it. anyone else have this problem? Thanks in advance.