Adding the complaint, Noisy aircon, and cooling problem, so that people are aware of this seemingly common problem. Really annoying and hope there is a quick/cheap fix to it.

This is so annoying, whenever you turn the fan on it makes the noise, so I end up not using A/C, instead I roll down the windows. It sounds like the fan is loose, tried to take off the motor (under glove compartment) but you need a 5.5 mm socket!! And there are so many bolts to take out that it is terrible, going to bring it to work tomorrow and see if they can help me. Not impressed. And GM will hear about it when I bring in my 3 recalls on the car!!!