2024 Gmc Sierra 3500hd At4. The 2024 sierra hd lineup includes 2500hd. 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.
Research the 2024 gmc sierra 3500 at cars.com and find specs, pricing, mpg, safety data, photos, videos, reviews and local inventory. Choose from either a gmc sierra 2500 hd or 3500 hd at4, and learn more about the vehicle specs, trims,.