Okay I am having a problem with my A/C in my Blazer I've had my compressor replaced finally got all of my leaks fixed and replaced all the visible vaccum hoses and still without by passing my heater core I have no Air Conditioning. It just keeps blowing out hot air. No one seems to know or have any idea as to why my Air Conditioner is working. I really like my blazer but after having invested a little over 600.00 into just getting the A/C up and going with no luck is just getting frustrating. I am considering selling it and getting a truck. I would like to keep it if I can get the A/C up and going but I don't want to have to invest a whole lot more money into it. If anyone can help it would be much appreciated.