6.2 engine replacement Yukon Denali please share your experience

[GMCnewbee]

I agree with Jerry455 about good dealerships keeping good techs. Also, a flat rate mechanic knows if the job is not done right it is coming back to get corrected on his dime. That alone weeds out the ones that should not be there.

 

[Nexus]

I've had one real bad experience with a reputable Ford dealer.

I bought a new limited last edition of the last 2019 Ford flex with the 375-twin turbo V6 with all the bells and whistles.

A car that my wife hated immensely and I loved tremendously because of that, she called the mini hearse.

It had 13,000 miles on it when air-conditioning started getting sort of weak. Took it to the dealer their service manager said that the temperature sensor probably needed to be replaced in the dash is probably the culprit and needed to be replaced under warranty. So we went on motorcycle a trip for a week in the Smoky Mountains in Cherokee North Carolina left the flex at the dealership.

Stop at the dealership on a Saturday afternoon right about quitting time on our way back home. Service manager was gone
all mechanics left and the secretary didn't know much about what was going on but let me go in and see my Ford flex in the mechanics bay.

I can't really find the right word to describe the feelings I felt when I saw it. The dash was laying on the concrete floor of the shop bay. Part laying everywhere, scratch on the right and left front fender looks like from a belt buckle. Wires cut instead of unplugged.

I didn't get mad just say extremely disappointed. My wife said I looked like I was in shock and probably that's a good way to describe it.

Called up the dealership and made an appointment with the manager. I bought several vehicles from them, but I was just another anonymous customer. As I tried to explain in a civilized manner what I found in his mechanics bay with pictures in my hand I explained to him that this vehicle will never be in my driveway again and you're going to have to purchase it back from me. He acted surprised and knew nothing about, but he steps on his tongue later when he said he helped them get the dash out the car and if I had not witnessed it I would've never known.

Well that was the end of that no more discussion. I sent the pictures to my brother who is a lawyer and call Ford and explain the situation.

The next day he called for me to bring the title, and he had a

check waiting for me.



That is what worries me about an engine replacement. Sometimes even the ones you trust the most will screw you the worst.

 

[Stbentoak]

I've had one real bad experience with a reputable Ford dealer.

I bought a new limited last edition of the last 2019 Ford flex with the 375-twin turbo V6 with all the bells and whistles.

A car that my wife hated immensely and I loved tremendously because of that, she called the mini hearse.

It had 13,000 miles on it when air-conditioning started getting sort of weak. Took it to the dealer their service manager said that the temperature sensor probably needed to be replaced in the dash is probably the culprit and needed to be replaced under warranty. So we went on motorcycle a trip for a week in the Smoky Mountains in Cherokee North Carolina left the flex at the dealership.

Stop at the dealership on a Saturday afternoon right about quitting time on our way back home. Service manager was gone
all mechanics left and the secretary didn't know much about what was going on but let me go in and see my Ford flex in the mechanics bay.

I can't really find the right word to describe the feelings I felt when I saw it. The dash was laying on the concrete floor of the shop bay. Part laying everywhere, scratch on the right and left front fender looks like from a belt buckle. Wires cut instead of unplugged.

View attachment 473222View attachment 473223View attachment 473224View attachment 473225I didn't get mad just say extremely disappointed. My wife said I looked like I was in shock and probably that's a good way to describe it.

Called up the dealership and made an appointment with the manager. I bought several vehicles from them, but I was just another anonymous customer. As I tried to explain in a civilized manner what I found in his mechanics bay with pictures in my hand I explained to him that this vehicle will never be in my driveway again and you're going to have to purchase it back from me. He acted surprised and knew nothing about, but he steps on his tongue later when he said he helped them get the dash out the car and if I had not witnessed it I would've never known.

Well that was the end of that no more discussion. I sent the pictures to my brother who is a lawyer and call Ford and explain the situation.

The next day he called for me to bring the title, and he had aView attachment 473226 check waiting for me.



That is what worries me about an engine replacement. Sometimes even the ones you trust the most will screw you the worst.

Like Charlie Rich said.... No one knows what goes on behind closed doors.....

 

[Vladimir2306]

The engine is replaced as a complete unit, so it's difficult to make a mistake. Replacing the engine is quite simple. The problem is that the engines continue to arrive with terrible quality, and replacing the engine won't solve the problem with the L87. We've already had 2025 L87s with failures, and there's a new record-breaker: a new engine with 60 miles on it.

 

[Nexus]

The engine is replaced as a complete unit, so it's difficult to make a mistake. Replacing the engine is quite simple. The problem is that the engines continue to arrive with terrible quality, and replacing the engine won't solve the problem with the L87. We've already had 2025 L87s with failures, and there's a new record-breaker: a new engine with 60 miles on it.

WOW, sorry to hear that. That just fills me with confidence on GM fixing this issue.
This problem has got to be affecting their sales.

 

[shekmark]

Mine failed the test today. 23K miles on it. Driving a Subaru Ascent loaner.

 

[Nexus]

Mine failed the test today. 23K miles on it. Driving a Subaru Ascent loaner.

I have a silver Chevrolet Malibu in the driveway now that I had to pick up from enterprise Rent-A-Car.
My Yukon Denali Ultimate is the dealership now getting engine replacement at 4700 miles.
I have talked to the dealership manager, and I am on the fence on which way to go.
I'm sure most of you out there would say replace the engine and let it go. Extended warranty factory new engine
more or less, what could go wrong. If I planned to keep this extended time I probably would keep it but I'm not.


We are negotiating with dealership buying it back from me. Surprisingly, they want it.
if they meet my price I will let it go. I will not buy another GM 6.2 vehicle. This issue with the 6.2 has got to be hurting their
bottom line. The real issue I have is they knew this for quite some time and only accidents and a class-action suit brought them
to this point. Even the dealership manager said that he would not himself have another 6.2 until the replace the engine completely in 2027. I know everything has its problems, but Yukon Denali was GM pentacle of craftsmanship and excellence not no more for me.





Bill

 

[Fless]

...Yukon Denali was GM pentacle of craftsmanship and excellence not no more for me.

You might mean pinnacle....or not.

 

[Scarey]

If you meet your states lemon law requirements, push for the price you want. Once returned as a lemon it must be resold as a lemon, that’s your leverage.

 

[Nexus]

You might mean pinnacle....or not.

View attachment 473823

Pentacle-

-blame this on Dragon NaturallySpeaking. My Mistake

The Devil's in the Details





AI Overview

Pinnacle
Key meanings include:
Highest Point or Achievement: This is the most common figurative use,
referring to the peak of success, fame, a career, or a development process.



AI Overview
Best High End Luxury Cars : The Pinnacle of Automotive ...
The "pinnacle in building cars" refers to the highest levels of luxury,
performance, and bespoke craftsmanship.



The GMC Yukon Denali Ultimate is widely considered the pinnacle
of GMC's full-size SUV luxury and engineering, offering premium
features and materials that rival dedicated luxury brands.

 

[dtxmm]

Our 2023 Denali became problematic right as it left the Lemon Law window. Transmisison was replaced alongside the 6.2 and within a day or so of getting it back the new engine is misfiring on the highway (check engine light blinking like a Christmas tree) and the idle is so rough it shakes the vehicle at stop lights. Currently on day 48 dealing with the current engine issue and opened a case for a buyback/replacement with GM; honestly hoping we hit the 60 day mark where they have to buy it back or replace it.

Wife is insistent on another Yukon. Unfortunately the dealer that has ours is playing the lowball trade and minimal discount game. Perhaps the active case will get their attention. Anyone have experience in a similar situation?

 

[Ltop]

I just recently took my 2024 Yukon Denali Ultimate with 4500 miles on it and had it tested the for (L87) engine issue.
The service tech came in and said your engine failed the test which completely surprised me because I have seen
no issues with the engine knocking or performance. I had only recently had the first oil change ( done at the dealership)
I took the filter home and disassembled it with very little if any metal in the filter and it was the original first filter.


I asked him about the engine replacement timeframe they were unable to give me a time on receiving a new engine.
So I asked the service tech can I still drive it and he said yes. I would not take it on a long trip. This is a little confusing if
the engine is in such a shape it needs to be replaced should I not run it? Now it would be like a doctor tell you you have
to have to have a heart transplant but going home and don't do any jogging we will call you when the heart comes in.


So I'm wondering will this devalue my very expensive Yukon? I'm sure this will show up in a Carfax (engine replaced).
I had many 6.2 Yukon with no issues, but I usually trade up every three years. I think now I might need to make change
even though this is under warranty replacing an engine and all the connections etc. can also add other issues in the future.


And then from my online research it gets confusing is there still an extended warranty on the new engine or not some say
that there is just a standard factory warranty after the engine is replaced others have said the ten year 150 thousand mile
extended warranty that comes with the new engine.



Also are these engines brand new. Or are they remand? How would you know.



If you had your 6.2 engine replaced, please share your experiences and any issues after the fact.
Did you trade or sell it after it was replaced?




Thanks

Had engine replaced on my 2021 Yukon XL Denali 47,000 miles. Gm sent me paper work which reflects new warranty of 10 year, 150,000 mile warranty on engine effective from date of purchase.

 

[Nexus]

My Yukon Denali Ultimate is now sold back to the dealer.
We came to a compromise which is fair to both and I no longer an owner of it.

I hope next owner with the new engine has a better experience than I did.
If it had passed the test I would have never done this but I've had bad experiences with major components replacement
at dealerships. Don't want to give them a bad name for changing it is really not that complicated.

I have had many high-end Yukon and Tahoe over the years with no issues. But GM has now lost a high-end customer.
I know that every brand has an issue and it was always the other guy not me. I still can at least appreciate the replacement
engine under warranty and I know a lot of you who had passed the test wished they didn't to get a new motor.

I'm waiting till away after the first of the year to repurchase something (Tax issues). I still have my sights on a Range Rover V8 130 maybe.

Good Luck To All

Bill