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Duramax Fourth Generation: 2007.5-2010 (LMM) Discuss the fourth generation (2007.5-2010) of the 6.6L Duramax diesel engine & associated components. Engine related discussion ONLY.

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Old 04-26-2019, 08:15 PM   #11 (permalink)
G2GBY
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Originally Posted by markw8 View Post
Also I'm seeing two different AC delco numbers, not sure which is correct.
Mark
Depends how many alternators you have.

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Old 04-26-2019, 08:33 PM   #12 (permalink)
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I'm finding two numbers that one seems to be for a single alt. The other isn't saying it isn't for a single.

I don't want the Gates because of a TSB that says use only an OEM belt. I don't know if It's still valid or not. After Market belts could cause an electrostatic charge and possibly damage the transmission control module. This I think was limited to LMM's and maybe a little earlier.
Mark

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Old 04-26-2019, 08:53 PM   #13 (permalink)
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Gatorback is the suspect, but not proven, belt in the bulletin.
Gates is not suspect.
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Old 04-26-2019, 09:26 PM   #14 (permalink)
mp06011999
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Quote:
Originally Posted by markw8 View Post
I'm finding two numbers that one seems to be for a single alt. The other isn't saying it isn't for a single.

I don't want the Gates because of a TSB that says use only an OEM belt. I don't know if It's still valid or not. After Market belts could cause an electrostatic charge and possibly damage the transmission control module. This I think was limited to LMM's and maybe a little earlier.
Mark
Yea, I shoulda maybe been clearer. I was insinuating that since I mentioned there was a belt brand "issue" and then listed what I used I was meaning to tell ya that was safe. Sorry. My head, why aren't you in there... says my wife.

Btw, I know Gates makes the ACDelco branded PS hoses and I think coolant hoses. I would not be surprised if they made AC's belts.

Per yoose, heymccall rocks!
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Old 04-27-2019, 09:22 PM   #15 (permalink)
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Thanks everyone, it looks like I'll be looking for a Gates belt.
Mark
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Old 04-28-2019, 07:19 AM   #16 (permalink)
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Thanks everyone, it looks like I'll be looking for a Gates belt.
Mark
The Continental 4061195 poly-v belt works well also.
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Old 04-28-2019, 12:36 PM   #17 (permalink)
Ron Nielson
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Gates K061195 Multi V-Groove Belt
Assuming your truck has a single 125 or 145 alternator. No static problem with these.
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Old 04-28-2019, 12:45 PM   #18 (permalink)
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Yep, It's a single.
Mark
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Old 05-02-2019, 06:38 AM   #19 (permalink)
69project
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I have an 08 LMM. 127,xxx miles. It still has the oem belt. There is no noise or any cracking I can see. We will be going from Ohio to Vancouver Canada with a truck camper and pulling a Jeep.

Is there any consences on the service life of the belt and tensioner? I don't want to change something that isn't necessary.


Mark
So my 2007.5 LMM serpentine belt left the truck while driving to work one day with about 130k on the truck. I thought mine was fine too. When it wants to die, it will do so without warning.

As insurance, I would get a belt and the two idler pulleys as they like to seize over time and are real easy to change if you have the belt off. I would ALSO invest in a the special tool required to change the belt. It works like a champ compared to a breaker bar or anything else you might use to relieve enough tension off the idler pulley to mount the belt. I had to change my belt in the parking lot at work and it was a real PIA.

The belt is a super tight fit between the accessory drive and the fan/radiator etc. If I didn't go back to my shop and grab the serpentine belt tool I had from a previous job, I probably would still be there trying to get that belt mounted. So if you have the right tools and parts this is less than an hour job on the side of the road. If you don't, then it's a mini-life crisis.
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Old 05-02-2019, 10:58 AM   #20 (permalink)
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Quote:
Originally Posted by 69project View Post
So my 2007.5 LMM serpentine belt left the truck while driving to work one day with about 130k on the truck. I thought mine was fine too. When it wants to die, it will do so without warning.

As insurance, I would get a belt and the two idler pulleys as they like to seize over time and are real easy to change if you have the belt off. I would ALSO invest in a the special tool required to change the belt. It works like a champ compared to a breaker bar or anything else you might use to relieve enough tension off the idler pulley to mount the belt. I had to change my belt in the parking lot at work and it was a real PIA.

The belt is a super tight fit between the accessory drive and the fan/radiator etc. If I didn't go back to my shop and grab the serpentine belt tool I had from a previous job, I probably would still be there trying to get that belt mounted. So if you have the right tools and parts this is less than an hour job on the side of the road. If you don't, then it's a mini-life crisis.
I have to agree. The breaker bar would not move enough with the air cooler tube in place. This meant I had to remove the fender liner so I could remove the air cooler tube so the bar could move enough. YMMV, but yea, it coulda been easier I bet with the exact tool.

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And we're supposed to believe that Democrats aren't for open borders simply because they say so?
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