2nd engine failure, waiting since Oct 17/2024

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.so 2nd engine arrived at dealer monday12/16/24. Hope they prelube this one.

Vehicle returned to me 12/20/24……..Merry Christmas

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....

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.

jfoj said:

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.

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All oil changes at the dealership were on time with recommended oil and filter. I also checked the oil every other week.

Bkihum said:

All oil changes at the dealership were on time

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So did you go by the oil life monitor? I think that's what @jfoj was asking.

Bkihum said:

All oil changes at the dealership were on time with recommended oil and filter. I also checked the oil every other week.

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15burban said:

So did you go by the oil life monitor? I think that's what @jfoj was asking.

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yes ,I actually had every service between 5ooo to 6000 miles

jfoj said:

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.

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None of the above is a valid reason for the 1st or 2nd engine to fail....Period. The 1st engine was well within service requirements and certainly not "Way overdue for service".
An oil analysis would have probably revealed the oil was well within parameters before the engine grenaded. No amount of oil changes will fix engines that aren't built and inspected to the correct tolerances. It's just plain shoddy manufacturing and inspection and sent thru anyways. What if they built aircraft engines like this?

My 2022 has 19,750 miles now and you guys are making we nervous. I will report anything that comes up, but I am hoping it will be OK. It will be OK won't it?

GMCnewbee said:

My 2022 has 19,750 miles now and you guys are making we nervous. I will report anything that comes up, but I am hoping it will be OK. It will be OK won't it?

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You'll either never have a problem, or you will and GM will replace your engine.

It appears that most of the people who have reported engine failures here recently joined the forum and posted about their failure the same day. So, I'd imagine that we, here, are going to hear more horror stories than the general public -- and that the vast majority of the thousands of Escalades, Tahoes, Yukons, and pickups on the road won't ever have an issue.

I had my '09 Tahoe strand me (and others who were in the truck at the time) on the highway twice. Once was due to a failing battery, and the second time was due to a fried alternator. So, it doesn't have to be a complete engine failure that causes you to need to have your truck towed to a dealership for repairs. This stuff happens, and never at a good time.

My '23 with the 6.2 is "in the range" for a total engine failure, but I'd say that I'm more aware and vigilant than nervous. Fingers crossed!

GMCnewbee said:

My 2022 has 19,750 miles now and you guys are making we nervous. I will report anything that comes up, but I am hoping it will be OK. It will be OK won't it?

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I hope so,believe me when I tell you it is a nightmare