Question about 2000 Chevrolet Silverado 1500

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I have a squeaking noise coming from under the hood is this my idler pulley?

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Could be, but most off the time its caused by a worn serpentine belt.after the belt is off pull up on the idler pulley to make sure that it springs back properly. also since the belt is off now would be a good time to check your water pump for any play and the alternator also make sure that it spins freely.

Posted on May 01, 2010

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I have a 2005 Lincoln aviator that was making a loud whining noise so I took it to the ford dealership and they told me I needed a new idler pulley and belt and that it would be $350 to fix it. I want to...


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try changing the belt it might be squeeking it self or you did not replace the right part that was squeeking or another part was squeeking alnog with the idler

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1 Answer

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Once the belt is removed, the center bolt from the idler pulley should unscrew normally with a socket. The replacement pulley bolts back in with the same bolt, then just put the belt back on. The bolt should be very snug, but do not overtighten ir it will shorten the life of the idler. As tight as you can get it with one hand using a typical 3/8" ratchet should be adequate. There should be a belt routing diagram on a sticker under the hood. Belt removal and reinstallation is achieved by using a 3/8" drive ratchet or breaker bar to engage the square hole on the spring loaded tensioner arm and flex it clockwise on most engines. On other GM engines, placing a socket on the center bolt of the tensioner pulley and turning clockwise will flex the tensioner to loosen the belt. When you have the belt off, check all pulleys for smooth rotation and listen for squeaking. If any of them bind or squeak, they should be repaired/replaced as well. Installing a new belt is also a good idea when replacing the idler.

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you can change it by releasing tension on the pulley arm(as if changing the belt) and then unsecuring the idler arm pulley by means of a large bolt in the center of the pulley, usually reverse threaded. Pulleys cost about 10 bucks, but good bearings don't come cheap.

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