Looks like GM has issued a stop sale order on a large number of vehicles with the 6.2L engine. Massive recall will be coming next. Apparently after the cars are repaired their oil recommendation will change to use the Dexos R oil specified for Corvettes.
www.thedrive.com
GM Issues Stop-Sale and Recall for Failed 6.2L V8s in 2021-2024 Trucks and SUVs
After widespread engine failures and an NHTSA investigation, GM is recalling all 2021-24 full-size pickups and SUVs equipped with the 6.2L V8.