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

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.

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!

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.

This engine holds the record for most bolts holding down a valve cover.

Laughing at the Carfax Fox's face being blurred. 🤣

Guy at work sings the praises of this motor. Less than two years old, he's on his third turbo.

It is soooo great to see a smart articulate mechanic who is not covered head to toe with ridiculous tattoos. Thank you.

In love my Denali 4x4 baby Duramax! 80,000 miles with 30% of the time my 20ftx8.5ft enclosed trailer hauling ultra lux to and from Florida. 13mpg@85mph with trailer 37mpg@60mph w/o trailer. It’s had an afe scorcher max blue on it for 30k with no problems other then the water pump failing at 60,000-ish miles and glow plugs just replaced because they were “exceeding learning limit”. Warranty has taken care of it all. Only 20k until warranty expires but it doesn’t worry me. I love the 10speed trans too. This Eric agrees with Eric. I think someone grabbed the green handle at the fuel pump but didn’t make sure green=diesel. Great job patiently taking that blob of steel/aluminum apart without breaking something!! Also, this engine runs up to 42,000psi injection pressure. Imagine gas/diesel concoction making a 42,000psi blow torch!!

The fact that you blurred out that mysterious fox's face had me rolling😂

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.

A rubber belt running in oil is a bad idea. Remember what happened to the Ford diesel engines.

A rubber belt inside the motor. How cheap things have gotten.

No Piston McNuggets this week but we get a 3-piece Crispy Piston meal instead. The one that melted though the piston rings is a work of art.

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

I own the last of these engines (LM2), as my truck was built in June 2022. At 277HP and 460 lb/ft of torque, it's still quite a powerhouse for a 1/2 ton. They're rated for 150K miles before the oil pump belt needs replacing. And yes, it requires the transmission to be dropped to access the back of the engine.

I love this channel! You are so enthusiastic on your intro considering how many motors you tear down. And just funny as heck about your describing at motor motives. Just great info you provide as well. Keep up the teardowns and detective work! -edited because spit out my coffee laughing

“Unsatisfied not knowing the mileage of a 4 year old engine. That’s preposterous!” Always killing me Eric

my former work truck was a 6.0 ford. one day 3 injectors failed at the same time. the fuel pressure blew the injector tips off and the broken pieces went through the pistons. it was still running on 5 for about 5-6 minutes. after getting it to a dealer he showed me the pistons and except for a hole the rest of the dead pistons looked melted like these were.

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

I love how you still show care to the order on those main caps even though the block is shot.