Well, my issues with my 97 Tahoe started on a rather warm day and my compressor clutch would not engage. I then found that the reason behind that was no freon in the system. The reason for no freon was a leak in the condenser. I replaced the condenser but in removing the lower hard line must have messed up the threads on the nut and now it will not go back on. I have the new line with new fittings on it but am having difficulties trying to get the old line off to replace it without damaging anything else. Has anyone had better luck than I am and possibly have some advice for removing this line?