loud squelling

You can try running the engine briefly in your 2000 Chevrolet Camaro in order to see if the noise is gone with the belt off. If the noise is gone with the belt off then you know the noise is related to the accessories. The best way to isolate a noise from the accessories is listening with a stethoscope. A stethoscope will help isolate the noise to help you determine exactly what the cause is.