Yes, there were a few new 2021 Escalades at my dealership that have already had this issue. There was a bad batch of lifters that were installed at the factory, I really think that GM should do a recall. They sent the dealer a bunch of new lifters knowing there was a problem. I had all my lifters replaced and a couple of bent push rods. I took two days to complete, I hope there are no more issues. Crazy to think an engine rebuild after 5000 miles, unacceptable!