2024 Gmc Sierra 3500hd At4. Explore the differences between the 2024 gmc sierra 2500 hd vs 2024 gmc sierra 3500 hd, and see for yourself. Adaptive cruise control with trailering assist, previously standard on the 2024 at4x and denali ultimate trim levels, now comes on the at4 and denali trims as well.
The first ever sierra hd at4x and at4x aev edition is taking the at4 experience to the next level. Choose from either a gmc sierra 2500 hd or 3500 hd at4, and learn more about the vehicle specs, trims, and features available.