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post #1 of 9 (permalink) Old 03-02-2014, 05:25 PM Thread Starter
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Cobalt Serpentine Belt Replacement

Omg, I couldn't believe that someone would unbolt their engine to change a serpentine belt. There is a tool that fits into a 3/8" hole that you use to loosen the belt tension, and to install a new belt. It takes 10 minutes. Don't unbolt your engine mounts. Just because someone else did it on the internet doesn't make it right. Right tool for the job makes all the difference.

---------- Post added at 04:22 PM ---------- Previous post was at 04:14 PM ----------

To remove the old belt,
Use the j44811 tool to rotate the drive belt tensioner counter clockwise to release the belt tension.
Remove the drive belt from around the tensioner.
Remove the right front fender liner.
Remove the engine splash shield.
Remove the drive belt from around all the other pulleys.
Remove the drive belt from the vehicle.

To install the new belt,
Install the drive belt to the vehicle.
Install the drive belt around all the pulleys, except for the tensioner.
Install the engine splash shield.
Install the right front fender liner.
Using the J 44811, rotate the drive belt tensioner counter clockwise to release the spring tension.
Install the drive belt around the tensioner.

---------- Post added at 04:25 PM ---------- Previous post was at 04:22 PM ----------

Keep in mind that this is a specific tool for gm products, unfortunately the regular serpentine belt tools are too long, and do not have a jog in the middle to go around engine parts. I have seen posts of people using a 3/8" ratchet to do the same thing... Yes it will work, hit it is a very tight area to get into.
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post #2 of 9 (permalink) Old 03-02-2014, 05:34 PM
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U mean this one, yeah it works great but you have to get the right one. There are 2 different angles to the tool. Get the one where the 3/8 drive isn't straight with the lever. Or drive is at 45


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Last edited by Coby7; 05-18-2014 at 09:07 AM.
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post #3 of 9 (permalink) Old 03-02-2014, 06:04 PM Thread Starter
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Looks similar, but is much shorter. U got the right idea though. No need to unbolt the engine mounts like I have seen in other posts. That just seems really drastic.
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post #4 of 9 (permalink) Old 05-18-2014, 06:43 AM
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Just changed my serpentine belt yesterday. My magic tools? A 2"x4" and a 1"x4" I had in the garage. The 1x4 fit up under the tensioner. Cut it to length (about 2'). Used the 2x4 to make a lever under the car. I lined it up, my kid pushed down on the lever and voila! Belt tensioner released and pulled the belt off and replaced it in under 5 minutes. Of course I had to take the damn tire off and remove the plastic shield first.

Scrap wood in the garage has infinite usage, I've found. :-)
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post #5 of 9 (permalink) Old 05-19-2014, 08:09 AM
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More of GM stupidness....
Let's put this here in the most tight spot we can think of
Buddy made one out of a old socket and bar...

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post #6 of 9 (permalink) Old 08-11-2014, 04:30 AM
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Where can I get the correct J 44811 ?
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post #7 of 9 (permalink) Old 08-11-2014, 04:40 AM
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You can always get it on Kent Moore J 44811 Accessory Belt Tensioner Unloader NEW TAG 1109 | eBay
or at your GM dealer.

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post #8 of 9 (permalink) Old 08-11-2014, 04:40 AM
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Is it this one?
https://gmtoolsandequipment.com/en-U...x?itemID=99510
If anyone has one could they give me the dimensions of length from drive end to start of bend, length of bend area, and rest of length.
Looks like it would not to be two hard to make one with a welder if I am looking at the right one?

Is tensioner on the top or bottom engine?
Do you use the tool from the top or under the car?

Last edited by stevehendo34; 08-11-2014 at 04:52 AM.
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post #9 of 9 (permalink) Old 08-11-2014, 04:49 PM
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That is exactly the one, but man that's expensive. Borrow one if you can.

I bought a cheap one $10 and bent it to my liking with a torch.

You use the tool from the top, idler sits just bellow alternator.

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