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How to Replace Smooth Idler Pulley 2000-06 Chevy Silverado 1500

Created on: 2017-10-03

How to repair, install, fix, change or replace a screeching, squeaking or worn engine idler pulley on 06 Chevy Silverado

  1. step 1 :Removing the Serpentine Belt
    • Attach a 3/8" breaker bar to the belt tensioner
    • Turn the tensioner counterclockwise
    • Pull the belt off the pulleys and out of the engine bay
    • Release the tensioner
  2. step 2 :Removing the Idler Pulley
    • Remove the 15mm bolt from the idler pulley
    • Pull the idler pulley off the engine
  3. step 3 :Installing the Idler Pulley
    • Line up the idler pulley, bushing, and bolt
    • Place the idler pulley on the engine
    • Thread the idler pulley bolt by hand
    • Tighten the idler pulley bolt with a 15mm socket and ratchet
  4. step 4 :Installing the Serpentine Belt
    • Familiarize yourself with the belt routing diagram
    • Put the belt over the A/C compressor pulley
    • Loop the belt under the power steering pump pulley
    • Bring it over the water pump pulley
    • Bring it under the idler pulley
    • Bring it over the crank pulley
    • Attach a 3/8" breaker bar to the belt tensioner
    • Turn the tensioner counterclockwise
    • Bring the belt over the altenator pulley
    • Check that the belt is routed correctly, using the diagram
    • Release the tensioner

Tools needed

  • 15mm Socket

    Ratchet

    3/8 Inch Breaker Bar

Hi, I'm Mike from 1A Auto. We've been selling auto parts for over 30 years.

I'm using a 1/2" breaker bar with a 3/8 drive adapter. I'm going to put it in here, in the end of the auto belt tensioner. Pull it this way, pull the belt off, and let the tension go. Pull the belt off all the pulleys.

I'm going to remove this idler pulley with a 15 mm socket and ratchet.

When we reinstall our idler pulley, make sure all these components are here in the back, like this little bushing, because the bearing is going to ride on that. Make sure to thread that in by hand. It is going into aluminum, we don't want to cross thread it. We're just going to tighten it up. Once it feel like it's tight, I'll stop.

If you don't remember how the belt was routed on the engine, there should be a diagram under the hood. We're working on the V6, so we're going to use this diagram here. Put this this way, then up around the power steering pump, up and over the water pump, under the idler, over the crank pulley, up and over the alternator, then the A/C compressor, the power steering pump.

I need to flip this tensioner down. What I'm actually going to do is pop it off the alternator real quick and I can just hold it in place, grab the tensioner, pull it down, pop it back up onto the alternator. Make sure it's seated in the tensioner grooves. Let the tensioner out. The belt is seated in all the grooves. It's actually not lined up perfectly on the water pump pulley, so I want to just readjust it. So release some of the tension and I can slide it over. There, it's nice and straight and aligned now. Let the tension back out, and the belt is replaced.

Thanks for watching. Visit us at 1AAuto.com for quality auto parts, fast and free shipping, and the best customer service in the industry.


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