Re: 02 GC Laredo whirring/chirping near ac compressor
Welcome to the garage.
Have a look at the belt tensioner pulley bearings. They become dry over time and start making noises. When not changed in time, the pulley can get damaged and the serpentine belt comes loose, eventually causing more damage. Just remove the serpentine belt and feel for play on the pulleys and rotate them by hand. You can open the dust caps of the bearings to put some grease in, if you can't get new pulleys so quickly, but its just for a short time.