Yukon 2022 6.2 engine died at 75,000 miles.

[Vladimir2306]

Vlad- What is the build date of the new engine? Since they are tearing it down, are you doing a DFM delete?

We sent the engine production date, May 2024. We almost made it to the 183rd day of 2024) but we talked to the supplier in the USA. Engines after the 183rd day of 2024 are not on free sale, most likely this is due to a shortage due to the recall

 

[Scarey]

I’m a 135 and have not heard anything from the app or vin search.

 

[Vladimir2306]

I’m a 135 and have not heard anything from the app or vin search.

Then your engine is most likely assembled as crookedly as my new one, the photo of which I posted

 

[Kaminski]

Oh man. So are your repair guys swapping the crank and rods? I would think you run the risk of the same thing with the build date being before the day 183 cutoff.

 

[Scarey]

Then your engine is most likely assembled as crookedly as my new one, the photo of which I posted

I am keeping my fingers crossed that it may not be as crooked. I’m guessing that date is a guaranteed date of the new practices/parts in place. There are probably some builds before the 183 that meet specs.

 

[Vladimir2306]

Oh man. So are your repair guys swapping the crank and rods? I would think you run the risk of the same thing with the build date being before the day 183 cutoff.

No, we do not change the crankshaft and connecting rods. Our craftsmen sharpen the gaps, bringing them to the GM standard. The crankshaft will be ground because it already has signs of wear. Connecting rod liners from the 5th generation, changed to red from the 4th generation

 

[Vladimir2306]

Not sure why you are able to get a Yukon and/or new GM parts delivered to Russia.

Maybe GM can supply some? But then they would supply the known ****** engines.

Because business is above sanctions, lol. In general, we have no problems, neither with buying a car in the USA and delivering it to Russia, nor with spare parts. 4 weeks and any spare part is at my home. Yes, it has become more difficult, more expensive, and a little longer. But in general, these are surmountable difficulties. Look, as it turned out, replacing the engine for me in time is much faster than for the owner of the Yukon in the USA)

 

[Kaminski]

No, we do not change the crankshaft and connecting rods. Our craftsmen sharpen the gaps, bringing them to the GM standard. The crankshaft will be ground because it already has signs of wear. Connecting rod liners from the 5th generation, changed to red from the 4th generation

I think the defect is in the metallurgy of the crank and rods though. I believe the metal is defective, not strong enough to hold together. I don’t think the bearings are the failure issue although obviously your new engine had bad stock bearings. I’m just hoping the crank and rods don’t have the weakened metallurgy defect and will fail/break regardless of grinding them into spec. Maybe I’m wrong though.

 

[Vladimir2306]

I think the defect is in the metallurgy of the crank and rods though. I believe the metal is defective, not strong enough to hold together. I don’t think the bearings are the failure issue although obviously your new engine had bad stock bearings. I’m just hoping the crank and rods don’t have the weakened metallurgy defect and will fail/break regardless of grinding them into spec. Maybe I’m wrong though.

The issue of metal weakening is present in L87, this is a fact

 

[KMeloney]

@Vladimir2306 -- When your engine failed, do you recall whether your turn signals and/or flashers/hazards worked? The idea of coasting to a safe place off the road is bad enough, but having to do it with no turn signals is REALLY bad.

Thanks for sharing all of these experiences with us. It's very helpful.