Yukon 2022 6.2 engine died at 75,000 miles.

[Vladimir2306]

@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.

The hazard lights worked, I turned it on, and a friend in the car behind me covered me from passing cars. Stopping in the left lane of the highway is deadly. Our police have statistics. A car stopped in the left lane of the highway will be demolished by another car in an average of 15 minutes. Therefore, it is forbidden to stop in the left lane, even if there was an accident, it is necessary to leave the left lane and stop on the side of the road and wait for the police or traffic safety inspector

 

[Edlee321]

Wow, you offered so much details, very impressive Vlad, so you are rebuilding the new engine or the old one?

 

[Vladimir2306]

Wow, you offered so much details, very impressive Vlad, so you are rebuilding the new engine or the old one?

They put a new engine on me, having previously opened it, and modified it to GM standards

 

[charkmapman]

https://www.facebook.com/reel/2090108064757391

 

[KMeloney]

Incidentally, do all (‘21+) Escalades come with the 6.2? There’s no trim level where it doesn’t have the 6.2, is there?

 

[Vladimir2306]

Incidentally, do all (‘21+) Escalades come with the 6.2? There’s no trim level where it doesn’t have the 6.2, is there?

No, there are also escalades with a 3-liter diesel engine

 

[jfoj]

For the record, just confirmed that DFM is functional in both Sport and Tow mode. Watched cylinder deactivation counts increase. The switched to L9 and no DFM activity or cylinder deactivation count increase.

I would not expect at 95 MPH/2700 RPM under heavy load that DFM would be dropping cylinders, the engine loading was probably 85-100% for the bulk of the time. But slightly slower speeds, DFCO/Coasting and the DFM would be operational.

I have not seen DFM quit functioning above 85 MPH, but again it is probably due to an engine loading issue. These 6000 bricks at 85 MPH have a bunch of wind and rolling resistance so the engine is still working pretty hard unless you are on a slight downhill grade.

 

[BacDoc]

https://www.facebook.com/reel/2090108064757391

This is interesting!

Vladimir, did your service find any wrist pins missing?

 

[Boston]

Wow, sorry for your troubles with this engine. I’m waiting for General Motors to execute the recall on my 2023 Denali with only 17,000 miles.
I now feel they will say everything is fine and give me a 0W-40 oil change and send me on my way.
I now plan to demand an extended warranty or a vehicle by back!!!

 

[keithcruiser]

Was cruise control still engaged when the transmission started to downshift? I am thinking if the engine is starting to fail, you have commanded the cruise to maintain a certain speed and as the engine loses power the transmission will shift into a lower gear to try to keep the selected speed.