Whoops

[wireman]

You may be able to get one at a discount.
https://www.thedrive.com/news/gm-issues-stop-sale-ahead-of-recall-for-blown-6-2l-v8s-in-some-2021-2024-trucks-and-suvs

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[sajohnson]

You may be able to get one at a discount.
https://www.thedrive.com/news/gm-issues-stop-sale-ahead-of-recall-for-blown-6-2l-v8s-in-some-2021-2024-trucks-and-suvs

Any idea what the 'inspection procedure' involves?

It's not clear to me how switching to 0W-40 will solve the issue. That implies that some engines were damaged by the use of 0W-20, but others were not.

 

[wireman]

I would think they would have to drop the pan being that the crank & connecting rods are involved.

Speculating that the tolerances are bad, bearings, journals or whatever.

I can see a warranty extension in the cards.

 

[sajohnson]

I would think they would have to drop the pan being that the crank & connecting rods are involved.

Speculating that the tolerances are bad, bearings, journals or whatever.

I can see a warranty extension in the cards.

My thought as well (dropping the pan for a bottom end inspection).

What had/has me confused is this (from the article):

"The connecting rod and/or crankshaft engine components in these vehicles may have manufacturing defects that can lead to engine damage and engine failure."

"Manufacturing defects" implies something other than excessive wear due to the use of low viscosity oil -- like microfractures that may not be detectable with the engine assembled.

That said if the problem is actually excessive wear caused by oil with viscosity that's too low (and not manufacturing defects) then they may just check bearing > journal clearances, as you said.

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