I have a squealing noise around my serpentine belt, my friend told me it was bearings are gone in one of the pulleys, how can I figure out which pulley it is?

15

Asked by Oct 30, 2015 at 12:30 PM about the 2006 Pontiac Grand Prix Base

Question type: Maintenance & Repair

4 Answers

89,075

There is only one pulley, here is a photo of what it looks like...

1 out of 1 people think this is helpful.
15

There is the alternator, and water pump and whatever else that belt goes around, how do I know which one is making the noise, to my war sounds like the alternator but how do I find out for sure without taking to a mechanic

89,075

To see if it's this Pulley, SPRAY WD40 on the back side of the pulley, not the belt. if the noise stops then its this pulley...

1 out of 1 people think this is helpful.

Take the belt off and turn the pulleys by hand. If one doesn't turn very easily replace it.

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