Question about 2002 GMC Sierra

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Squeal from front of 2002 gmc sierra

I have a 2002 V8 Gmc Sierrra 1500. There is a squeal coming from the A/C Compressor and water pump area. It gets louder and lower as my speed changes. If I am at a stop, it continues. I havent seen any leaking of fluids, and the truck runs fine other than this noise.

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  • oznpstctrl Jan 07, 2009

    I looked up the idler pulley in my chilton, but what am i looking for? Will this part whine, or will it cause something else to whine, why is it whining, Are the bearings in this pulley worn out. I live in Arizona, would you know roughly what it would cost to replace, and if the bels are in acceptable condition, do they need to be replaced as well?

    Thank you!!



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Check Idler pulley....

Posted on Jan 06, 2009

  • dmkovnesky Jan 08, 2009

    Yes the pully has a bearing, it should be when facing engine on left side just above water pump.also you can try taking a pencil and rubbing the lead on the under side of belt.check belt for any brown coloring on inside it could just be worn from over use to run air conditoning.but by rubbing lead on the under side the squeaking should go away.

  • dmkovnesky Jan 08, 2009

    Sorry,its solid black and runs about $35 to buy online



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