I purchased a ‘23 LTZ last summer with a 6.2 and love it. It had 3K on it when I got it and now it has 18.5K. I hope it continues to be a great engine, it’s my 3rd.
I have two trucks with 6.2L engines. One has 12K and the other has 38K. I have always run regular in both trucks and have no pinging and get 20-21 mpg on the highway.