So my sister calls me last night telling me her car sounds like an airplane. The noise coming from under the hood is so loud she car barely hear the radio.

Any body have experience with the supercharger failing on the GM 3.8L from a 1998-99 Pontiac GTP? Does it sound that bad? Could it just be a bad alternator bearing?

I have not went and looked at the car myself, so I am looking for some feedback first.

Thanks!