Belt Tensioner Pulley? - Chevy and GMC Duramax Diesel Forum
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Old 05-04-2013, 12:09 PM   eBay Motors  #1 (permalink)
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Belt Tensioner Pulley?

The pulley on my tensioner is getting a little wore out, shaking pretty rapidly when the trucks started. I ordered a new pulley off of amazon, that it would work as either a tensioner or idler pulley. It was noticably bigger then the pulley that was on it, and was to tight of a fit. Does anyone know where I can get one? I called chevy and they dont sell it seperatey from the tensioner



The pulley i ordered
Goodyear 49006 Gatorback Idler and Tensioner Pulley : Amazon.com : Automotive Goodyear 49006 Gatorback Idler and Tensioner Pulley : Amazon.com : Automotive
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Old 05-04-2013, 02:35 PM   eBay Motors  #2 (permalink)
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How old is the tensioner? For another $30 you can get the whole assembly off Amazon. Might be worth the extra $$$.
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Old 05-04-2013, 03:35 PM   eBay Motors  #3 (permalink)
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Be sure you replace the idler pulleys-- those usually wear out before the tensioner. If any of the pulleys get bad enough, the fan belt will come off, and you will loose power steering, power brakes, and radiator cooling fan.
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Old 05-04-2013, 05:27 PM   eBay Motors  #4 (permalink)
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You can buy just the tensioner pulley from Rock Auto for $13.23 (part number 36239). It's a different part than the idler pulley. The retaining bolt is a different size, too. Replacement is real easy. I also replaced the ider pulleys. RockAuto sells those, too, for $21.79 each (part number 36310).

If you want to replace the entire tensioner assembly, Rock Auto sells them. Prices range from $39 to $86.

Wherever you get the pulleys from, make sure you get the STEEL and not the PLASTIC ones.
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Old 05-04-2013, 06:19 PM   eBay Motors  #5 (permalink)
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mrmanners can set you up.
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Old 05-04-2013, 07:13 PM   eBay Motors  #6 (permalink)
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I just got the truck about 2 weeks ago, its an 01 2500hd with 133k, the tensioner doesnt look to bad though and has plenty of spring force on it, thats why id really like to save the money. I checked both of my idler pulleys when I had the belt off and they both were good to go.
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Old 05-04-2013, 08:34 PM   eBay Motors  #7 (permalink)
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Quote:
Originally Posted by jblather View Post
You can buy just the tensioner pulley from Rock Auto for $13.23 (part number 36239). It's a different part than the idler pulley. The retaining bolt is a different size, too. Replacement is real easy. I also replaced the ider pulleys. RockAuto sells those, too, for $21.79 each (part number 36310).

If you want to replace the entire tensioner assembly, Rock Auto sells them. Prices range from $39 to $86.

Wherever you get the pulleys from, make sure you get the STEEL and not the PLASTIC ones.
I looked up the part # you gave, and that one has groves through it? ANd mine doesnt. Thanks for all the other info though
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Old 05-04-2013, 08:35 PM   eBay Motors  #8 (permalink)
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mrmanners can set you up.
and sorry im new here/the whole diesel world, what the hell is a mrmanners?
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Old 05-04-2013, 08:58 PM   eBay Motors  #9 (permalink)
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Quote:
Originally Posted by jeckel7234 View Post
....and that one has groves through it? ANd mine doesnt.
Tensioner pulley has grooves, idlers are smooth.


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and sorry im new here/the whole diesel world, what the hell is a mrmanners?
The user name for one of our site vendors.
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Old 05-04-2013, 09:18 PM   eBay Motors  #10 (permalink)
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From personal experience with another vehicle, a good preventive maintenance measure is to replace both the tensioner and the idler especially with the kind of milage on that rig. When one of them fails it can be costly and it is preventable. Just my 2 cents or me trying to save 2 cents and spending $1500 after the fact.
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