2022 6.2 L Scoring cylinder piston

[ZR2 silverado]

50200 miles
On cold start hearing loud ticking noise and when warm up slight noise still. Went to dealer (still under warranty 60000 miles ) and they confirmed noise in and tore apart Moter to find 3 soring piston walls on the left side and small metal fragments on cylinders. What next now waiting on GM to decided next step > Sucks to be me, hopefully they fix it problem.
Just a FYI

 

[KLA]

Time for a new motor, under warranty.

 

[wutang61]

Sounds like another bearing failure.

 

[AXE]

Awesome, you get a brand new motor! Should be good for 120k now!

 

[ZR2 silverado]

Thank you for all the support, hoping all goes well in the coming week and will keep you'll updated on process. I doubt Gm will give me another 60000-mile warranty on a new motor if this what they decide to do, but i will be asking if this is the case.
Wish me luck

 

[KLA]

When I had the motor replaced under warranty because of dropped lifters on my 2015 Silverado, I was given a 1 year warranty on the motor replacement in addition to the current warranty that I had. Good luck with the repairs.

 

[ZR2 silverado]

Update
Also, a bent push rod which caused the souring of the piston ,still a waiting on Gm to suggest repairs

 

[ZR2BIZON]

Nothing a little Amsoil additive couldn't fix

 

[SGRACING]

Nothing a little Amsoil additive couldn't fix

I think he should have Mobile One the bitch!

 

[ZR2BIZON]

I think he should have Mobile One the bitch!

The village does sleep the the Mobil Uno

 

[SGRACING]

The village does sleep the the Mobil Uno

FYI if it wasn't the greatest then GM wouldn't use it.. and that's what they use along with the factory....Hmmm and there blowing up...hmmm

 

[ZR2BIZON]

FYI if it wasn't the greatest then GM wouldn't use it.. and that's what they use along with the factory....Hmmm and there blowing up...hmmm

 

[ZR2 silverado]

UPDATE

Waiting on a GM Teck to come to dealership now and inspect and discuss the next steps, (as they told me metaphorical "ball"is in their court) after they now set pictures of souring cylinder and sending service history. Bought used but had a car fax showing all service done at GM dealership on the oil changes by previous owner which were all in good order and well maintained) now going on week 3

 

[22-ZR2]

Wow, glad to see they are expediting the repairs for you. Sorry you are having to go through this crap.

 

[ZR2 silverado]

Photos of pistons
Going to be along wait before they come out ,maybe another week or so no ETA ,Who knows what the GM text will say to dealership as far a warranty work with this problem on bent pushrod and the souring pistons .
I keep you’ll all posted on process.

 

[AXE]

Photos of pistons
Going to be along wait before they come out ,maybe another week or so no ETA ,Who knows what the GM text will say to dealership as far a warranty work with this problem on bent pushrod and the souring pistons .
I keep you’ll all posted on process.

You get a new motor, you have a damn near new truck! There's some upside here!

 

[MrScottly]

Update
Also, a bent push rod which caused the souring of the piston ,still a waiting on Gm to suggest repairs

This may be why it's taking GM so long...They have to send out an engineer to properly diagnose the failure. Bent push rods don't cause cylinder wall scoring. Inadequate lubrication/foreign objects/debris causes scoring. Bent push rods are caused by other things (lifter sticking, over-revving, valve slicking, ). Without looking at it, I am guessing some sort of valve train failure that caused debris to ender the cylinder which caused the scoring...Or you coincidentally had two separate failures at the same time. Sounds to me like you are a customer with a service center that doesn't have a good diag tech and can't provide an accurate cause of failure.