Well we finally made it. Got home late last night with 502000 on our 2018 5.3 e assist. Had the 3rd brake job at around d 470000. New front wheel bearings and compleat exhaust system. The clunk between 1st and 2nd is more pronounced now. Got another cross country trip after memorial day. Still averaging 22.7 mpg. Going to think hard on a new truck. They want to try for 750000 told them iam getting to old for this at 77years old.