New engine 2023 Denali

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350engine

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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

Wes
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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

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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.
 

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