Question about 2000 GMC New Sierra 1500

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Rattling & squeaking coming from front end of motor..

I have a 1999 GMC Sierra 1500, 5.3L. I have had the Idler Pulley changed as well as Belts and the Tensioner Pulley is good. The engine squeaks as if there is a loose belt, when you depress the brake pedal and put it in gear a rattling sound comes from the engine. No one can seem to pinpoint the problem. Any ideas what it could be?

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I'm takin a stabe at this one, I think it may be coming from your waterpump. Use a long piece of metal or a pry bar and place it on any part of the pump that you can safely put it while the truck is running. Put your ear to the bar and you should be able to tell if it's coming from there. Good luck!

Posted on Dec 30, 2008

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Good Morning

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