This just happened to my brand new 2021 Yukon XL Denali, 3,000 miles on it and 3 months old. Had to have it towed bc it was making the loud clicking noise and rough idling. The dashboard had the same service notifications you noted, which all came on at the same time.
Dealership called and said it was a collapsed lifter. It is being repaired now but of course it will take a few days and no loaner vehicles bc of the shortage.