New engine 2023 Denali

[Luke01845]

I purchased a 2023 Yukon Denali Reserve with less than 2000 miles on it my 6.2 L engine is shot and I need a new one. I want GMC to buy the truck back but they want to fix it and I’ve worried about future issues. Anyone else have this experience?

 

[BrokerThis]

How is the engine shot exactly?

Make sure the dealer gives you a loaner during the extent of the repair/replacement.
Ask for extended warrenty to 6yr/100k

 

[tom3]

Was this GMC titled new when when you bought it? Or was it actually a used vehicle? The warranty is transferable but a used vehicle is probably not covered over lemon laws.

 

[UsualSuspect]

Engine swaps are generally easy, most of it is plug and play, unlike the old days. What happened to the engine where it needs to be replaced?

 

[NoYukonYet_1Jeep]

I had an engine replaced on a 2023 Denali. Rod bearings blew at 3600 miles. Owned the car for 1 Month. Engine replacement went well, car was running great, but I still worked with GM and they ended up replacing the car for us. Whole process end to end took about 5 months from when the first motor blew and when the second 2023 Denali was delivered. My second build was definitely expedited. Think it was about 9 weeks from when I submitted the order. My first order took them 9 months to build.. Good luck. New truck is also running well. 6.2L in both trucks ..

 

[nicoles747]

I purchased a 2023 Yukon Denali Reserve with less than 2000 miles on it my 6.2 L engine is shot and I need a new one. I want GMC to buy the truck back but they want to fix it and I’ve worried about future issues. Anyone else have this experience?

my 2023 ultimate Denali engine ceased while driving two weeks ago. It has under 11,000 miles. Dealer ordered a new engine but I am also worried it will happen again. According to the dealer gmc is having issues with the 6.2 engine.

 

[Burban22]

Yikes! My 2018 sierra with 6.2 has been fine but only have 24k on it. I know GM went from AFM to DFM in 2019. I thought lifter failure was the biggest problem on 5.3 and 6.2.

If engine locked up must have been oil pump failure?

 

[Doubeleive]

Yikes! My 2018 sierra with 6.2 has been fine but only have 24k on it. I know GM went from AFM to DFM in 2019. I thought lifter failure was the biggest problem on 5.3 and 6.2.

If engine locked up must have been oil pump failure?

they went to dfm in 2015 on the suv's and I believe 2014 on the pickups
plenty of engines out there with many hundreds of thousands of miles
no changes in 2019, changes occured in 2021

 

[Burban22]

AFM gen 1 started in 2007 trucks and SUV. GMT900

AFM gen 2 2014 trucks and 2015 suv. K2XX

DFM (can shut down all cylinders instead of just 4) started in 2019 Trucks / 2021 SUV T1xx and current generation.

https://gmauthority.com/blog/gm/general-motors-technology/general-motors-propulsion-technology/general-motors-dynamic-fuel-management-cylinder-deactivation-technology/

 

[Geotrash]

AFM gen 1 started in 2007 trucks and SUV. GMT900

AFM gen 2 2014 trucks and 2015 suv. K2XX

DFM (can shut down all cylinders instead of just 4) started in 2019 / 2020 when T1xx and current generation.

https://gmauthority.com/blog/gm/general-motors-technology/general-motors-propulsion-technology/general-motors-dynamic-fuel-management-cylinder-deactivation-technology/

That was only on the pickups. The SUV's still had just AFM and not DFM until 2021.

 

[350engine]

my 2023 ultimate Denali engine ceased while driving two weeks ago. It has under 11,000 miles. Dealer ordered a new engine but I am also worried it will happen again. According to the dealer gmc is having issues with the 6.2 engine.

On my 6.2 2021 Denali, I experienced spun rod bearings on cylinder #1 and #2 resulting in locked up engine at 29K miles. Engine was replaced. 6,000 miles later , same thing happened. Spun rod bearings in cylinder #5 & #6 locked up engine at 35K miles. Engine was replaced last week. I have no confidence in the oil distribution in this car and will talk to dealer today to sell this back. I need reliability. Upon reading these posts, this is common.

 

[Doubeleive]

they went to dfm in 2015 on the suv's and I believe 2014 on the pickups
plenty of engines out there with many hundreds of thousands of miles
no changes in 2019, changes occured in 2021

I was thinking direct injection, that changed with the L83, L86

 

[ALT1345]

Stunned. '22 Denali camshafts "were eaten." 25k miles. This really upsets me because I've been a die hard GM fan my whole life... most of that has gone out the window forever. I bought it FOR that V8 engine SPECIFICALLY. What a pile of junk, guess I'll buy another LX570. Slower but the Toyota 5.7 engine will tick to 400k miles.

 

[TVSS]

I purchased a 2023 Yukon Denali Reserve with less than 2000 miles on it my 6.2 L engine is shot and I need a new one. I want GMC to buy the truck back but they want to fix it and I’ve worried about future issues. Anyone else have this experience?

We had the same problem, I requested a buy back and they said they don't buy them back UNLESS the vehicle has been at the dealership for a cumulative of 30 days worth of repairs. We were in for 2-1/2 weeks so we waiting for the next problem to occur, sure enough 2 months later the leveling system went out. That took another 2 weeks to fix. I have reached out to GM and they state that since they fixed the vehicle that they probably would not offer a buy back at this point. I asked about the cumulative days of repairs and she said that might full under the LEMON LAW, but they didn't deal with that. That has to happen through our state. I have made a complaint to our state consumers complaints. Sad part is this has become GM's norm. You pay over $100,000 for a vehicle and you can't trust it to get you from point A-B.
I have a feeling a class action lawsuit is not far behind.

 

[ALT1345]

I don't think this is "common", it's more than should be for sure and we got shafted.... but I see so many 6.2L powered trucks be it Silverado or Escalade allllllll day long.

Denali is the new S Class of this city. They're just everywhere.