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Old 12-21-2015, 07:58 AM   #1 (permalink)
sierradmax
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Tensioner replacement

Truck started making an odd, intermittent sound (spun bearing sound). I brought it to my mechanic who scoped it and thinks it's the belt tensioner.

While I'll have that replaced along with a new belt, there's some mention of idler pulleys? Are there 2?

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Old 12-21-2015, 04:06 PM   #2 (permalink)
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2008 GMC Sierra 2500 CREW CAB PULLEYS & BELTS/ACCESSORY DRIVE
GM Part No. ACDelco # 98094201 TENSIONER, Engine Fan Coolant Required (1) $67.79
GM Part No.: 98057284 Pulley ACDelco 15-40526 Required (2) $12.83 each

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Last edited by Ramblinrodney; 12-21-2015 at 04:33 PM.
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Old 12-23-2015, 04:10 PM   #3 (permalink)
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Belt, tensioner, and 2 idler pulleys: Kennedy Diesel
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Old 12-24-2015, 06:36 AM   #4 (permalink)
sierradmax
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Thanks, New belt, tensioner and 3 idler pulleys. All is quiet now.
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Old 12-24-2015, 08:15 AM   #5 (permalink)
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Quote:
Originally Posted by sierradmax View Post
Thanks, New belt, tensioner and 3 idler pulleys. All is quiet now.
Just out of cuerosity how many mile on your truck?
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Transgo Jr. PCV Reroute kit, Trans Line Repair Kit By Dirty Hooker Diesel,
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2019 Arctic Fox 27-5L 10,500 dry weight
UAW Local 699 Retired Test Technician

Last edited by Ramblinrodney; 12-24-2015 at 08:16 AM.
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Old 12-24-2015, 08:57 AM   #6 (permalink)
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08 w/ 55,000
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Old 02-02-2016, 05:57 PM   #7 (permalink)
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I just started getting the noise today so I guess I'm changing them in the next few days. I looked at it a little today and holy cow there's not much room to work with. Any tips except to just go at it.
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Old 02-03-2016, 04:28 PM   #8 (permalink)
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Quote:
Originally Posted by absolutevil View Post
Any tips except to just go at it.
https://www.dieselplace.com/forum/71-...tensioner.html
Same for pulleys. Search.
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Transgo Jr. PCV Reroute kit, Trans Line Repair Kit By Dirty Hooker Diesel,
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2019 Arctic Fox 27-5L 10,500 dry weight
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Old 02-03-2016, 04:50 PM   #9 (permalink)
absolutevil
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Thank You Ram that did help!
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Old 02-04-2016, 01:29 PM   #10 (permalink)
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I did the two idlers, the tensioner and new belt this morning. Had to remove the air box and top shroud over fan. I made a sketch of the belt before I removed it and while installing the new one I discovered I can't draw very well. I'm glad i snapped two or three pictures with my phone camera before also because my drawling looked like my 4 year old granddaughter did it. The pics saved my butt.

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