GM 3.0L Duramax Tear Down

[Big T]

Oil pump belt was fine. Oil starvation and jumped time.

 

[BoostN]

I can already tell I wont have mine past 100K, but for the most part they seem pretty reliable with high mileage.

 

[jrsavoie]

My cousin liked his the last time I talked to him. Not sure what he has for miles on it, or issues with it

 

[RI Chevy Silveradoman]

Here is another tare down from the same guy. Interesting results.

 

[WarWagon]

Oil pump belt was fine. Oil starvation and jumped time.

Hindsight being 2020...

The $10,000 3.0 Duramax Timing Chain Flaw – What GM Fixed and How to Protect Your Truck

Posted on April 15, 2025Owning a Duramax diesel is a point of pride, but it comes with the responsibility of staying on top of maintenance – especially when a potential $10,000 repair looms. If you’ve got a 2020 3.0 Duramax (LM2) or are eyeing one on the used market, you need to know about a...

www.duramaxnews.com

 

[MrMarty51]

Hindsight being 2020...

The $10,000 3.0 Duramax Timing Chain Flaw – What GM Fixed and How to Protect Your Truck

Posted on April 15, 2025Owning a Duramax diesel is a point of pride, but it comes with the responsibility of staying on top of maintenance – especially when a potential $10,000 repair looms. If you’ve got a 2020 3.0 Duramax (LM2) or are eyeing one on the used market, you need to know about a...

www.duramaxnews.com

Good seeing some postings from You My Friend.
Okay, trains back on the tracks, nothing to see here.

 

[RI Chevy Silveradoman]

Another 2020 3.0 Duramax teardown. Timing chain strectched and slipped off the gear.

 

[BoostN]

I didn't watch all the videos, but I wonder what failure rates they have (like GM would ever share.. but... )? I have 75K on mine now.. this truck is the longest I've ever kept a truck. But I fully expect to have this sold by 100K, so not much for me to worry about (hopefully).

 

[RI Chevy Silveradoman]

What year is it? 2020?

 

[BoostN]

What year is it? 2020?

21!

 

[jrsavoie]

I didn't watch all the videos, but I wonder what failure rates they have (like GM would ever share.. but... )? I have 75K on mine now.. this truck is the longest I've ever kept a truck. But I fully expect to have this sold by 100K, so not much for me to worry about (hopefully).

LOL
I don't think I've ever kept a truck for less than 100,000 miles