GMC Troubleshooting Questions? Ask a Mechanic for Answers
Hi there, I am Cam. Can I get your first name please? The freon, after having that replaced, did it work for a bit?
The noise, does it happen only when starting?
OK Judy, can you describe the noise for me?
It may be that your compressor is failing. This would explain the noise and the lose of freon. Is there any green dye or fluid around the compressor?
At any rate I think you may need service on that. Do you do the work yourself or are you taking it in?
Ok so look for the green dye. Second with the engine off, turn the outside plate of the compressor by hand. IT should be smooth turning then hit smooth resistance and go easy again. Can you do that?