2024 Gmc At4. The 2024 gmc sierra hd at4x aev climbs, and moves, mountains. Tame the untamed in the first ever sierra hd at4x aev edition.
Gmc is building on the at4 legacy with the first ever sierra hd. In the following gm authority breakdown, we’re taking a closer look at the 2024 gmc sierra 1500 towing capacities with ball hitch and gooseneck configurations.