Yukon 2022 6.2 engine died at 75,000 miles.

[Vladimir2306]

LOL okay, you literally have a blown up engine in your lap from an oil related failure,,,, but still don't think the oil contributes at all ,, and you think "that is obvious". Okay man you do you, put it back together and pour some more 20 weight in it.

Also interesting to note, the Corvette with the exact same rotating assembly (exactly the same, part number for part number) that has spec'd 0W40 oil from the being is not having issues (and Corvette owners whine about everything),,,, strange.
...

Firstly, I doubt that the owners of corvettes drive them for 40 thousand miles a year, so at a low mileage any oil will be fine, and secondly, the 4th generation Tahoe Yukon escalades drive without problems for 200-300 thousand miles on 0-20 oil. Even in Russia we have a Tahoe with a mileage of 350 thousand km on 0-20 oil. So calm down already, the oil is normal. It's not the problem

 

[Vladimir2306]

It looks like one or more mains spun. this stops oil flow to the connecting rod bearings.

So it was mains fail-->connecting rods.

What caused the mains to spin is the question.

How did the thrust bearing look?

I really don't like how the front counterweight contacted the block...

It seems to me for some reason, the oil pump abruptly stopped giving oil, although it was high engine speeds, and the pressure was high

 

[blanchard7684]

It seems to me for some reason, the oil pump abruptly stopped giving oil, although it was high engine speeds, and the pressure was high

I would agree that is a definite possibility.

@Vladimir2306 : I would tear down the oil pump and the control solenoid.

I think the counterweight damage is downstream of the main bearing failure.

 

[CMoore711]

Man…. Sorry to see this has happened to you. Especially during full on road trip mode and you likely had some passengers along with you.

Admittedly you drive your vehicle hard, and by hard I will agree that it’s above the “average” owner/operator; But in my opinion still within range of what I would expect a vehicle of this caliber to handle/operate at. Fist bump tag-in @Doubeleive ...

Given your posts in the other super active GM L87 engine recall thread and the information/knowledge you’ve shared I feel it’s fair to say although you drive your vehicle hard you also maintain it just as well, you pay attention to the details, how it’s maintained, and I will even state you’re mechanically inclined/more knowledgeable than the “average” owner.

All that being said, from what you shared have access to some decent service and machine shops as well.

So I’m very curious as to what your corrective plan of action is to get your 2022 Yukon XL Denali repaired and back on the road?

Is you’re L87 6.2 rebuildable?
Considering swapping in a 6.6 L8T?

 

[Antonm]

Firstly, I doubt that the owners of corvettes drive them for 40 thousand miles a year, so at a low mileage any oil will be fine, and secondly, the 4th generation Tahoe Yukon escalades drive without problems for 200-300 thousand miles on 0-20 oil. Even in Russia we have a Tahoe with a mileage of 350 thousand km on 0-20 oil. So calm down already, the oil is normal. It's not the problem

I'd agree,,, but the Tahoe's/ Yukon/ Escalades that are failing generally don't have 40K miles on them either.

High load and low RPM is the hardest condition oil shear / film strength (which is where the tuning puts the 6.2 all the time). That's why working truck diesels that live at high load and low RPM run 15W40 oil. They're bearing clearance specs are not drastically different.
...

 

[viven44]

@Vladimir2306 your vehicle was involved in the recall and GM had specifically made a recommendation to move to 0W-40 on those set of engines, and your engine failure here is just too much of a coincidence to look past unfortunately. P0016 was found apparently on a subset of engines, not all.

My guess on what happened
1) as the bearings got hot, the engine started loading up and the speed went down without you pressing the brakes
2) your cruise control thought you were climbing a hill and downshifted to increase engine RPM
3) which caused the engine heat up and load up more
4) back to 2)

I do think the cruise control downshifting the trans to keep the speed was probably what really just a reaction/effect, but the root cause was likely the bearings overheating and causing the engine to come to a halt....

Having said that, you have skilled mechanics at your disposal, so seem to be in good hands now. You should follow your engine rebuilders guidance on oil viscosity from now as they are your warranty.

Keep your receipts who knows maybe you can pursue GM for expenses and recover the money since the recall is in effect.

 

[Vladimir2306]

I would agree that is a definite possibility.

@Vladimir2306 : I would tear down the oil pump and the control solenoid.

I think the counterweight damage is downstream of the main bearing failure.

Yes, we will look at the masoyan pump, for some reason it seems to me that it is to blame as in the story with the cranking of liners on a land rover

 

[Vladimir2306]

Man…. Sorry to see this has happened to you. Especially during full on road trip mode and you likely had some passengers along with you.

Admittedly you drive your vehicle hard, and by hard I will agree that it’s above the “average” owner/operator; But in my opinion still within range of what I would expect a vehicle of this caliber to handle/operate at. Fist bump tag-in @Doubeleive ...

Given your posts in the other super active GM L87 engine recall thread and the information/knowledge you’ve shared I feel it’s fair to say although you drive your vehicle hard you also maintain it just as well, you pay attention to the details, how it’s maintained, and I will even state you’re mechanically inclined/more knowledgeable than the “average” owner.

All that being said, from what you shared have access to some decent service and machine shops as well.

So I’m very curious as to what your corrective plan of action is to get your 2022 Yukon XL Denali repaired and back on the road?

Is you’re L87 6.2 rebuildable?
Considering swapping in a 6.6 L8T?

Thank you, my car is in good hands of excellent service. Lt8 has not yet learned how to put it in the 5th generation. Global B is difficult to break, but we have one owner of GMC Sierra in St. Petersburg, he is trying, there seems to be success, we are watching the whole community. For now, my plan is to fix the L87, and drive further)

 

[Vladimir2306]

I'd agree,,, but the Tahoe's/ Yukon/ Escalades that are failing generally don't have 40K miles on them either.

High load and low RPM is the hardest condition oil shear / film strength (which is where the tuning puts the 6.2 all the time). That's why working truck diesels that live at high load and low RPM run 15W40 oil. They're bearing clearance specs are not drastically different.
...

You're wrong in two places, my driving style is high rpm, it all happened when I was driving at a speed of 150 km/h in 8-9 gear with 2700-3000 rpm. Next, the GM diesel engine runs on 0-20 oil, even my last GLS. diesel, drove at 5-30, I can't even imagine what kind of car drives at 15-40

 

[Vladimir2306]

@Vladimir2306 your vehicle was involved in the recall and GM had specifically made a recommendation to move to 0W-40 on those set of engines, and your engine failure here is just too much of a coincidence to look past unfortunately. P0016 was found apparently on a subset of engines, not all.

My guess on what happened
1) as the bearings got hot, the engine started loading up and the speed went down without you pressing the brakes
2) your cruise control thought you were climbing a hill and downshifted to increase engine RPM
3) which caused the engine heat up and load up more
4) back to 2)

I do think the cruise control downshifting the trans to keep the speed was probably what really just a reaction/effect, but the root cause was likely the bearings overheating and causing the engine to come to a halt....

Having said that, you have skilled mechanics at your disposal, so seem to be in good hands now. You should follow your engine rebuilders guidance on oil viscosity from now as they are your warranty.

Keep your receipts who knows maybe you can pursue GM for expenses and recover the money since the recall is in effect.

Judging by my situation, the break in the oil film was sharp, the engine suddenly became dry. In such a situation, 0-40 oil would not help, that's for sure. Yes, I have an excellent service, with which we are constantly in touch, and their opinion is that 0-40 oil is harmful to our engines. As for the trial against GM, I am a realist, international law does not work in the face of sanctions)))