My 2021 LT Trail Boss doing exactly everything you just just wrote 1st cylinder fail knocking like the police! My a/c not cooling properly, brakes, traction control, stability trak all this at 10k miles! We’re so disappointed. This seems to be an on going problem with Chevy. I’ve already had mine in the shop twice for a/c issues now massive engine failure. Parts are back ordered. No signs of getting it repaired anytime soon. At what point is there a recall.??