Thread: Weird sounds when A/C is on

Originally Posted by Nathan07GP

Mine does the exact same thing. Been doing it for a while and the ac is still running. Kind of like a wining grinding noise.

Does it only occur when the A/C is on? The compressor may be a possibility.

If it is more of a high pitch whine, it may be related to the temperature actuator shaft. These are just suggestions, not a diagnosis.

Consider having the vehicle inspected by a certified technician for an official diagnosis. Please keep us posted.

Louis
GM Customer Service