I have a 2014 sierra with 90k on a 5.3 in 2020. It has had an oil pump replaced at 70k under warranty. Before it was replaced it made a racket noise which hasnt quieted too much. It used to go through a quart every 2k miles or so. After 20k on new oil pump, it looks to get about 4k miles before a quart is lost. It's ok. I'm not impressed. Stupid AFM.