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Bearing issues for the 6.2

ScathaTheWorm
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james olson New Member

james olson

Posted
Posted

Hello, 

 

My 2024 GMC Seirra 1500 Denali trim just blew the motor at 4000 miles. I did purchase it in Nov of 2024 and believe it was built in the middle to late of 2024.

 

The 6.2L L87 just seized up while driving, instantly put me and neutral and shut the truck off. After the diagnostic they informed me I would need to have it replaced and it is currently on back order with an estimate 2 month wait for just the engine to be shipped to the dealer. 

Jus Cruisin Enthusiast

Jus Cruisin

Posted
Posted
7 hours ago, james olson said:

Hello, 

 

My 2024 GMC Seirra 1500 Denali trim just blew the motor at 4000 miles. I did purchase it in Nov of 2024 and believe it was built in the middle to late of 2024.

 

The 6.2L L87 just seized up while driving, instantly put me and neutral and shut the truck off. After the diagnostic they informed me I would need to have it replaced and it is currently on back order with an estimate 2 month wait for just the engine to be shipped to the dealer. 

Best of luck. GM should be providing a no charge courtesy truck in these cases. 

BIGDOGx Senior Enthusiast

BIGDOGx

Posted
Posted
3 hours ago, Jus Cruisin said:

Best of luck. GM should be providing a no charge courtesy truck in these cases. 

I mean with that kind of wait time GM should just replace the truck, that is what i would do if I ran general motors instead of the token coat hanger saleswomen they have now! They will make this guy wait and wait and most likely stick him in a much lesser vehicle while he is making payments on a top of the line truck sitting waiting for Tony and Bob to install a new engine. This is how GM can change perception to a positive, the truck has 4k miles on it, the motor should not be seizing up at 4,000 miles, replace the entire goddamn thing as anything needing an engine pulled at 4,000 miles is a 150% lemon!

 

Gm should take that loss and gain a customer over it and give him a brand new truck that actually does what it is supposed to do. Instead they will shift the burden onto the dealer and the dealer should not be the one to have to clean up GM's messes like this!

  • Like 1
Jus Cruisin Enthusiast

Jus Cruisin

Posted
Posted (edited)
2 hours ago, BIGDOGx said:

I mean with that kind of wait time GM should just replace the truck, that is what i would do if I ran general motors instead of the token coat hanger saleswomen they have now! They will make this guy wait and wait and most likely stick him in a much lesser vehicle while he is making payments on a top of the line truck sitting waiting for Tony and Bob to install a new engine. This is how GM can change perception to a positive, the truck has 4k miles on it, the motor should not be seizing up at 4,000 miles, replace the entire goddamn thing as anything needing an engine pulled at 4,000 miles is a 150% lemon!

 

Gm should take that loss and gain a customer over it and give him a brand new truck that actually does what it is supposed to do. Instead they will shift the burden onto the dealer and the dealer should not be the one to have to clean up GM's messes like this!

I get your feelings and with 4,000 miles that would be the best thing to do for the customer. If...there was an equal truck laying around. The OP should push for a replacement with the delivering dealership and GM help. 

 

Now in my case, I have a 20,000 plus mile truck. GM shouldn't replace mine with new, if mine decided to scatter the engine. Just give me some wheels while I'm without the truck. I have a replacement on order and it looks like it'll be a 3 plus month wait. 

Edited by Jus Cruisin
GMCustomerService Senior Enthusiast

GMCustomerService

Posted
Posted
On 4/9/2025 at 9:44 PM, james olson said:

Hello, 

 

My 2024 GMC Seirra 1500 Denali trim just blew the motor at 4000 miles. I did purchase it in Nov of 2024 and believe it was built in the middle to late of 2024.

 

The 6.2L L87 just seized up while driving, instantly put me and neutral and shut the truck off. After the diagnostic they informed me I would need to have it replaced and it is currently on back order with an estimate 2 month wait for just the engine to be shipped to the dealer. 

Your safety is our highest priority, and we want to document these concerns and provide updates on your part delay. We can be reached via email at [email protected], and we ask that you include your VIN, dealerships name and address, and your mileage. By sending us a message, you consent to the information you provide being monitored and recorded by GM or those acting on GM’s behalf, subject to the GM Privacy Statement: https://www.gm.com/privacy-statement.

GMCustomerService Senior Enthusiast

GMCustomerService

Posted
Posted
On 4/9/2025 at 9:44 PM, james olson said:

Hello, 

 

My 2024 GMC Seirra 1500 Denali trim just blew the motor at 4000 miles. I did purchase it in Nov of 2024 and believe it was built in the middle to late of 2024.

 

The 6.2L L87 just seized up while driving, instantly put me and neutral and shut the truck off. After the diagnostic they informed me I would need to have it replaced and it is currently on back order with an estimate 2 month wait for just the engine to be shipped to the dealer. 

We would like the opportunity to assist, James. Please email us at [email protected] with further detail, including your VIN, so we can take a look. By sending us a message, you consent to the information you provide being monitored and recorded by GM or those acting on GM’s behalf, subject to the GM Privacy Statement: https://www.gm.com/privacy-statement.

Jus Cruisin Enthusiast

Jus Cruisin

Posted
Posted
On 4/14/2025 at 6:55 PM, GMCustomerService said:

Your safety is our highest priority, and we want to document these concerns and provide updates on your part delay. We can be reached via email at [email protected], and we ask that you include your VIN, dealerships name and address, and your mileage. By sending us a message, you consent to the information you provide being monitored and recorded by GM or those acting on GM’s behalf, subject to the GM Privacy Statement: https://www.gm.com/privacy-statement.

Responded to a "one hit wonder"...... Kind of like you guys (bots) are when responding with "your concerned"  replies that never go anywhere or resolve issues. Or update with resolutions to customer you're so concerned about. Now I see the bot responded to the one hit wonder again. 

 

This is the same stuff that is on 5th Gen Ram. Ford dropped their social media group on the F150 forums this year. Same thing.... Nothing comes of it. 

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GMCustomerService Senior Enthusiast

GMCustomerService

Posted
Posted
On 4/9/2025 at 9:44 PM, james olson said:

Hello, 

 

My 2024 GMC Seirra 1500 Denali trim just blew the motor at 4000 miles. I did purchase it in Nov of 2024 and believe it was built in the middle to late of 2024.

 

The 6.2L L87 just seized up while driving, instantly put me and neutral and shut the truck off. After the diagnostic they informed me I would need to have it replaced and it is currently on back order with an estimate 2 month wait for just the engine to be shipped to the dealer. 

James, our team is an email away. 

Andrew Martens Enthusiast

Andrew Martens

Posted
Posted

 I have a 21 Silverado 6.2 and my engine just blew up at 38000miles/61000kms.  It has been chirping like a belt squeal for the last 2 months, and the GM dealer had to phone their help line to try and figure out that it might be the thrust bearing on the crankshaft.  But then this last weekend the engine started to knock and miss-fire. They told me GM has lots of stock of the engine in Michigan, I live in Canada so shipping time is about 1 week to get here.  
I have been looking at buying a new truck, but i would be interested if the 25 model year is an upgraded engine as well.  If not i guess i go for the diesel this time

PunchT37 Enthusiast

PunchT37

Posted
Posted
On 9/16/2024 at 8:05 AM, PunchT37 said:

What causes the bearing issue? The 5.3`s don`t seem to have the problem. Forged vs cast crank? Crank finish too rough? Hmmm. The lifter bore sizing on some blocks causing even lower oil pressure with the 0w20 oil? Add 420 hp to the mix? A 5.3 block is just a small bore 6.2.🤔

Hmm. Wonder if GM read this post?

Srode1 Enthusiast

Srode1

Posted
Posted (edited)
11 hours ago, Jus Cruisin said:

So there's an official recall. 

 

https://www.gm-trucks.com/gm-l87-62l-engine-recall-2021-2024-silverado-sierra-escalade-tahoe-suburban/

So the fix if DTC 0016 isn't set, is replace the oil with 0w40 oil.  I wonder if this should also be done on the previous generation of 6.2 too? 

 

On the other hand, GM explanation is make the oil consistent with LT1 and LT4s in Camaros and corvettes since it's a high performance engine.  Well, the power output is the same for the previous generation 6.2 engines so why aren't those seeing the same problem?  What am I missing here?  Are the build tolerances different? 

 

And on edit - what's this going to do to the EPA fuel economy certification?  My understanding is 0w20 was used to reduce drag and improve gas mileage. 

Edited by Srode1

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