what is the screaching noise coming from my engine

2003 PONTIAC GRAND AM
97,800 MILES
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NITAYLOR
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it seems like the crank pulley or something by or on the pulleys is screeching? kind of sounds like the pins on brake pad wear indicators but i already know i need new brakes and rotors. seems like the noise is towards the middle or bottom of the engine on the side where the pulleys are. I have a 2003 pontiac grand am GT 3400 3.4Liter V-6 with Ram Air and all caliper/rotor brakes.could it be the tensioner or possibly the need of a new pulley and bearing/snap ring assembly?
Nov 4, 2011 at 7:13 PM
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HMAC300
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it can be the tensioner/alternator, pulley etc.disconnect the blet and start the car if it stops you know it's somplace in belt sytem then shut off engine an dspin different things.
Nov 4, 2011 at 7:54 PM