WARRANTY REJECTED!? 2020 Silverado 1500 3.0 Duramax Engine DESTROYED at JUST 45K MILES! LM2 Teardown

742,106
0
Publicado 2024-07-06
For parts go to www.Importapart.com or email us at [email protected]
Every week I post a new engine teardown. These are engines that have failed or thought to have failed and we try to discover what happened, why it happened, and what parts survived. Here are a few of my favorites!
8.0 Dodge Ram V10 WORST ONE EVER!    • 8 LITERS OF DESTRUCTION! Dodge Ram V1...  
Ford 6.8L 3V V10    • FORD 6.8L 3V V10 TEARDOWN! Big Engine...  
Dodge Ram 3.0 Ecodiesel    • JUNK Jeep Ram 3.0 ECODIESEL Engine Te...  
Ford/JLR 3.0 Powerstroke    • BAD 2017 Range Rover Sport 3.0 V6 Die...  

Today we tear into a 3.0L Duramax Inline 6 Turbodiesel from a 2020 Silverado 1500. Known as the LM2, 2020 was the first year this 277hp, 460ftlbs of torque 6 cylinder is the first half ton diesel GM has made in decades. This particular engine died at JUST 45k Miles! STILL UNDER WARRANTY? Right? These trucks come with a 5 year, 60k mile warranty so how did this engine end up on my stand? Well I believe this failure was NOT covered by the manufacturer. Not all failure scenarios are the manufacturers fault. Abuse, Neglect, Modifications are some of the reasons a claim may be rejected.
In this case, this engine was brought in with the torque converter stuck on it, completely locked up. Due to its design, getting the engine to turn over to get the converter off was quite laborious, which is likely why whoever replaced the engine opted to replace the torque converter with a new one.
So WHAT HAPPENED? This engine has TONS of damage, but what caused this failure, and why do we think it wasn't covered?

Why am I doing this? My name is Eric and I own and run a full service auto recycler. Part of our model includes dismantling bad, blown and core engines to salvage the good parts for resale. We do not rebuild or repair engines, merely supply parts to those who do!

I really hope you enjoyed this teardown, as always I love all of the comments, feedback and even the criticism. Catch you all on the next one!

-Eric

Todos los comentarios (21)
  • @edifyguy
    I actually like a lot of things about this engine. This was tuned. Someone thought they were going to get a lot of extra horsepower cheap. Then things went boom, and they discovered how expensive those extra horsepower really are. Thanks for sticking with it and getting it apart, and bringing us along!
  • @MultiTelan
    Guy at work sings the praises of this motor. Less than two years old, he's on his third turbo.
  • @SebBrosig
    Eric dated a timing chain guide in high school but she left him for a water pump. This can be the only explanation of his ongoing vendetta.
  • @johntrout640
    GM parts guy here. The truck has had an interesting life so far lol It was sold in Montana in July of 2020. It had a couple oil changes at the dealership from which it was sold, had a couple warranty claims done for sensors and stuff failing in the exhaust system. It goes dark for a while, then fast forward four years to February of this year then it pops up in Arizona for a DPF replacement. Then here we are today with a blown engine. I'm surprised by how 'cheap' a new long block is as well. It's only $3,400. The more you know.
  • The fact that you blurred out that mysterious fox's face had me rolling😂
  • @socaliguy81
    My 09 Tahoe only lasted 109k miles with flawless maintenance and no mods. After tearing it down to find the problem, I we found the following: Burnt oil residue coated the inside of the valve covers, it had spun a single rod bearing in the journal and was likely due to lack of oiling. When we dropped the oil pan, we could see a repaired section that was welded behind the oil filter. I have photos. The oil pan was never repaired by me and I was the only owner, which meant it came from the factory like that. Upon repairing the engine and ordering a new oil pan/pickup, we noticed the oil return nozzle was different. The old one looked like it would just sprinkler the oil out in all directions while the new one had a plastic cover over the nozzle that would direct the oil to the bottom of the pan where the pickup obviously is. Thanks to it being 9k miles out of warranty, I had to come out of pocket for all repairs. I will never own another GM vehicle as long as I live.
  • @frankd2301
    It is soooo great to see a smart articulate mechanic who is not covered head to toe with ridiculous tattoos. Thank you.
  • @BDKennels
    I come here for the fun. With all that's happening in America and around the world, I need your humor and great attitude. A very sincere Thank You. I hope you never stop.
  • @lunar3278
    “Unsatisfied not knowing the mileage of a 4 year old engine. That’s preposterous!” Always killing me Eric
  • When "BLUE" makes his first appearance it's like when the coach brings his best player off the bench to the playing field. The crowd takes notice and chants, "...go, Blue, you can do it!"
  • @WhodatnTx
    As an OLD mechanic, very old, it’s just complete insanity looking at all that stuff you have to remove just to get to the motor. I definitely lived in the right time ( for me anyway) cause there’s no way I would fight all that to be a tech nowadays!!!
  • @cricketyosh
    I'm so glad you don't do advertisements or channel sponsors. But sourcing that pry bar and slapping a CriCut sticker with the word 'blue' on it would be awesome.
  • My brother bought a truck 8 months ago with that engine, it was in his driveway for about 4 hours, check engine light came on, went into limp mode and the truck was sent off to the dealership up north, he got the truck back about 2 weeks ago because they have been waiting for that coolant control, GM was making his truck payment the entire time, they called him once a week to update him and tell him that the part was not yet available. Apparently it's made of unobtainium and the backorder list is extensive
  • @Renville80
    When Eric said 'Let's give it a little brap' when getting ready to use the impact wrench to loosen a bolt, I was reminded of a remark I read on some vehicle restoration blog years ago where the writer opined that an impact wrench sounded like a robot breaking wind... :)
  • This engine holds the record for most bolts holding down a valve cover.
  • As soon as I saw the top of those pistons, my brain screamed "Gasoline!". Why? Air Force; young ignorant Airman; didn't know the truck was a diesel; engine go dead...
  • @bw6378
    Seeing all these over engineered complicated nightmares really motivates me to keep pampering my 25 and 30 yo stuff. lol Thanks for the video!
  • @tielkgate
    Wow - That was fun! I have a 2005 version of that motor in my truck, with 111K miles on it, and it has been a good, reliable truck. It was nice to see how it's put together. I tore down and rebuilt my first big block at age 18 - I am now 68. Making motors go has always been fun for me. My Grandson is now a truck/car guy—a gentle giant who loves being greasy. Thanks for the good video. Papa
  • A rubber belt running in oil is a bad idea. Remember what happened to the Ford diesel engines.