I have a 2003 Ford Ranger 3.0L V6. I noticed today that when I tried to defrost my windshield this morning that nothing happened. Usually I've got a clear windshield in a few minutes. Didn't think anything about it til I turned the truck off and heard a little squeal. So then I tried to turn on my AC and the air coming out of the AC was much warmer than the vent air. It was 35 this morning.I could tell that the AC was not working. Could I have a bad compressor bearing causing the AC & Defroster not to work or is my compressor shoot. I do not hear any of the usual cycling of the compressor like when the freon gets low. This is the first AC/Defroster problem I've ever had. Can I get some input?