Changing belt, idler pulley, tensioner - Page 2 - Chevy and GMC Duramax Diesel Forum

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post #11 of 36 (permalink) Old 03-08-2011, 09:08 PM
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You are probably going to have to get your parts from the dealer. I believe they are like $15 a piece. Replace both of them if you are going to take the time. The idler and the belt you can get from Napa. The tensioners are pricey, I want to say like $100. You will need to know whether you have a 105A or 130A alternator to get the correct belt. Since you live in FL and you are spoiled with nice weather, id just get your idlers and drive to Napa and get your other parts and do it right in the driveway......that's what I did. Take a 1/2" ratchet and a pipe to relieve tension of your belt, pull it off and swap parts. Refer to the diagram on the plastic cover under the dash to put your belt in correctly.

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post #12 of 36 (permalink) Old 03-08-2011, 09:35 PM Thread Starter
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You are probably going to have to get your parts from the dealer. I believe they are like $15 a piece. Replace both of them if you are going to take the time. The idler and the belt you can get from Napa. The tensioners are pricey, I want to say like $100. You will need to know whether you have a 105A or 130A alternator to get the correct belt. Since you live in FL and you are spoiled with nice weather, id just get your idlers and drive to Napa and get your other parts and do it right in the driveway......that's what I did. Take a 1/2" ratchet and a pipe to relieve tension of your belt, pull it off and swap parts. Refer to the diagram on the plastic cover under the dash to put your belt in correctly.
Awesome thanks, and yes we Florida people are spoiled


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post #13 of 36 (permalink) Old 03-08-2011, 09:57 PM
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I got the tensioner for like $60 at schuck's/O'reilly's. Just make sure you have a decent sized breaker bar or ratchet for the tensioner. I didnt remove the fan shroud from my truck and it took me like 20 mins to change the belt, tensioner, and idler pulley. I dont know how much different the LBZ is, but on a LB7 it is simple.

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post #14 of 36 (permalink) Old 03-09-2011, 08:35 AM
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Not 15 each.... Bearings are 5$ each. Take idler off knock the bearing out. Take it to a bearing place, there is an ntn bearing replacement. Do all 3 if your doing them. IMO it's a waste of money to buy the pulleys unless they are damaged from the bearing exploding.


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post #15 of 36 (permalink) Old 03-09-2011, 08:42 PM
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Yeah i know...but didnt have the time to mess with it or a close place to take the idlers to. I would have had to drive 30 miles one way without a truck

I kept the old ones to change the bearings in for next time.

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post #16 of 36 (permalink) Old 03-09-2011, 08:49 PM
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Not 15 each.... Bearings are 5$ each. Take idler off knock the bearing out. Take it to a bearing place, there is an ntn bearing replacement. Do all 3 if your doing them. IMO it's a waste of money to buy the pulleys unless they are damaged from the bearing exploding.
bearing supply here wanted $15 for just the bearing, I got the pulley assembly for $19 at GM.

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post #17 of 36 (permalink) Old 03-09-2011, 08:52 PM
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You can get the bearing for $3-5. Depends where you look. I found them online when someone posted the part number awhile back.

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post #18 of 36 (permalink) Old 03-09-2011, 08:54 PM
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You can get the bearing for $3-5. Depends where you look. I found them online when someone posted the part number awhile back.
I checked three places all $15 local.

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post #19 of 36 (permalink) Old 03-09-2011, 09:46 PM
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buy online...much cheaper even with shipping.

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post #20 of 36 (permalink) Old 03-13-2011, 04:12 AM
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Dont know if there is a " commercial solutions" in the US but that's where I got mine from.


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