Question about 2004 Pontiac Grand Prix
All superchargers get pretty noisy make sure that the supercharger is full small allen head inspection plug next to the supercharger pully, the next thing to do would be to remove the supercharger belt and start it and see if the whinning goes away if it does then it is the supercharger making the noise. I wouldn't rule out any of the other pulleys making the noise remove the other belt and make sure that all of the other pulleys spin freely and make no noise when you spin them by hand.
Posted on Mar 22, 2011
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Posted on Jan 02, 2017
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