UPDATE!
Well, I took everyone's advice and passed on the Tahoe, and took the van in to get the A/C checked. According to my mechanic, it's going to cost $1200 at a minimum! And that doesn't include the rear A/C. Apparently, the compressor is tearing itself apart inside and the whole thing will have to be replaced, as well as a whole system flush and few other things that are over my head. I trust the guy who looked at it because his son is on my football team, and from experience the labor rates won't be any cheaper around my part of town. I could go with a rebuilt compressor but that will only save me a couple of hundred dollars.
So, I have put 2K in this van over the last four months and have to put another 1200 to 1600 for the A/C. What's next? I raise the question again, should I just cash my chips in and get another vehicle or pay the piper and stick with the van?