I have charged the a/c on my 1999 blazer but for some reason it is not holding the charge. I have put the leak seal as well and still losing the charge. What are the chances that its the compressor or just a leak in the line or something else. Your help is appreciated.

Thanks

 

Could be anything leaking really... best bet is to refill it once again (seems like a waste, I know) with the fluid that has the UV dye in it. Buy yourself a UV flashlight, they're on ebay for 5-10 bucks, wait a couple days so you know the fluid leaked out, and use the flashlight to see where it's leaking from.

Then you know if it's your compressor, evaporator, etc, and can go about ordering and replacing the correct parts.