Gm Lifter Recall 2025. The lifter failures reported with the 5.3 with dfm seem to have been fairly widespread and documented, my understanding is that gm has been replacing the failed. I just had my 2023 gmc sierra 1500 at4 diagnosed by the dealership.

The lifter failures reported with the 5.3 with dfm seem to have been fairly widespread and documented, my understanding is that gm has been replacing the failed. Service advisor also told me that.