2024 Sierra At4 Hd. See the full gallery here. The first ever sierra hd at4x and at4x aev edition is taking the at4 experience to the next level.
This 2500 hd comes in onyx black on black with kalahari stitching perforated leather interior. The new gmc sierra hd remains available in 2500 hd and 3500 hd models in regular, extended, and crew cab body styles.