My guess...
If it is deemed warranty, depending on tear down, they will replace the motor. Doubtful GM is going to spend the money on a rebuild with a factory that churns out new ones as cheap, or cheaper. Couple that with the warranty issues after the fact.
It will depend on bearing/crank wear which way it goes.
On the flip side, they might deny warranty because the oil got too hot and thinned out
causing the failure. (Especially if you were not using oil rated for the track.)
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