2 nd engine failure, waiting since Oct 17/2024

[Bkihum]

So 6.2L failed at 24926 Yukon Denali 2022,towed to dealership... Engine back ordered, finally came in and it was bad. I don't understand how GMC doesn't have a cut off on the engine issues.They are rolling the dice with our money. The 2nd engine started ran for `15 min and locked up with the marble sound. I was advised that it may have failed due to not pre lubing prior to starting. I was standing next to the vehicle when it froze up and it was the exact same noise that I heard when it originally left us stranded. Im still making car payments and insurance.I filed a claim with GMC customer support.We will surely take a big hit when we trade as car fax keeps track of all issues according to vin number.Last but not least they keep trying to make me accept one small car to another to use I ask for something comparable and they won't do it.

 

[Bkihum]

View attachment 443998

 

[B-train]

I'd get a lemon law attorney involved or call GM about a buyback. Being a 2022, the hit will be substantial, let GM eat the turd they made....

 

[jfoj]

What were your Oil Change Intervals? Do you go by the OCI?

I have concerns on these engines that fuel dilution of the oil is a problem, so shorter OCI's might be wise?

Understand that you may not need to worry about this as you may get out from under this vehicle. I plan on changing oil every 3500-4000 miles and obtain oil samples from each change to hopefully see if there is excessive wear occuing as well as fuel dilution.

I realize the Oil Change Interval had nothing to do with the replacement engine. Was the rediator replaceed along with the oil lines or did the oil lines at least get flushed out?

I would recomment to the shop to fill the oil filter with oil before installing it if the replacement does not have a filter alreay installed. Then disconnect the fuel pump fuse or crank sensor and crank the engine 5-6 time before starting to hopefully prime the engine with oil.

Can clearly understand how frustrating this must be.

Good luck.