Aggie06
I ain't the one to blame.
It’s going to depend how they are optioned. Some of the 2021s lacked the necessary chips for start/stop and DFM. The build sheet should say so. The DFM engines are totally different than the AFM. Have 17 different cylinder combinations they can operate in. There has been a lot of ate lifters on 2020 and 2021 DFM engines. You should be able to find the build dates to avoid on Google.
I have a 2019 with the 5.3. It likes to use oil, but the lifters haven’t been an issue, knock on wood.
I have a 2019 with the 5.3. It likes to use oil, but the lifters haven’t been an issue, knock on wood.