New 2024 Yukon XL Denali

[jfoj]

How can I find the engine build date? The oil smells a little gassey and is factory oil.
Thanks!

Engine build date tag is on the rear of the drivers side cylinder head, can be seen from under the car, ramps will be what you need or jack up the drivers side a bit.

The Julian build date of the engine is in the beginning of the lower number after the first letter and number, mine started with N1.

Engine Build Tag

As for the gas/fuel smell in the oil, when you get a chance, put the transmission in L9 and drive the vehicle on the highway at 65-70 MPH and see if you can "cook" the fuel out of the oil and at least reduce the fuel dilution. As mentioned, in the first 4-10. miles of any of these new vehicles, the engines are not run long enough to warm up the oil. Final assembly start up and test, moving vehicles around in storage for loading on transporters and then delivering to the dealer and moved around on the dealer lot. Short test drive and trip to local gas station to fill the tank. This is not ideal!

 

[Sean Michael]

I did it, traded my 6.2L Tahoe on a 2025 Cadillac CT5-V yesterday. Had it delivered with 4 miles on the odometer and it's even the same color as my Tahoe, GM's Radiant Red. Completely different direction going from a full-size SUV to a performance sedan, but I had been yearning to get back into something sporty and the CT5-V delivers, even has track mode and launch control. The 6.2L bearing issues definitely played a role in my decision as well though. Before buying I had a chat with a Cadillac tech who said he had three Escalades waiting for engines and they were coming in fairly frequently FWIW.

 

[Vinmega]

I took the truck out on a long multi hour drive this weekend and this thing is a mover!
I like this 6.2....
I think I got it broken in pretty good now. At 500 miles and will change oil to 0w-40.
Also wondering if there is a different oil pump I can put in, I see standard AC delco pumps for this truck. Was wondering if that type of pump will keep more oil where it needs to be, at the top....

 

[WalleyeMikeIII]

I took the truck out on a long multi hour drive this weekend and this thing is a mover!
I like this 6.2....
I think I got it broken in pretty good now. At 500 miles and will change oil to 0w-40.
Also wondering if there is a different oil pump I can put in, I see standard AC delco pumps for this truck. Was wondering if that type of pump will keep more oil where it needs to be, at the top....

I would not change your oil pump until your powertrain warranty expires. Don’t take chances with the propensity for issues…you do not want to give GM a chance to deny any warranty claims…

 

[jfoj]

I took the truck out on a long multi hour drive this weekend and this thing is a mover!
I like this 6.2....
I think I got it broken in pretty good now. At 500 miles and will change oil to 0w-40.
Also wondering if there is a different oil pump I can put in, I see standard AC delco pumps for this truck. Was wondering if that type of pump will keep more oil where it needs to be, at the top....

I see no need for changing the oil pump on the L87 6.2l for no reason at this time. I have been monitoring the oil pressure and with a minor exception of some confusion on the Oil Pressure PID calculations, I for the most part I feel the oil pump is not the problem contributing to the 6.2l failures.

I do disagree somewhat with how the ECM controls the 2nd stage of the oil pump to boost oil pressure. Seems GM programmed the solenoid to trigger more on RPM than engine Load. I believe they should update the ECM instruction set to trigger the 2nd stage oil pump solenoid probably at around 80% engine load as well as their RPM map they currently have programmed. Same oil pump, different instructions is all that is really needed.

 

[blanchard7684]

I see no need for changing the oil pump on the L87 6.2l for no reason at this time. I have been monitoring the oil pressure and with a minor exception of some confusion on the Oil Pressure PID calculations, I for the most part I feel the oil pump is not the problem contributing to the 6.2l failures.

I do disagree somewhat with how the ECM controls the 2nd stage of the oil pump to boost oil pressure. Seems GM programmed the solenoid to trigger more on RPM than engine Load. I believe they should update the ECM instruction set to trigger the 2nd stage oil pump solenoid probably at around 80% engine load as well as their RPM map they currently have programmed. Same oil pump, different instructions is all that is really needed.

That is good info.