2024 Gmc Sierra 2024 Hd At4. The 2024 gmc sierra hd features two new trims designed to boost the truck’s appeal (and sticker price): Consumer reports previews the updated 2024 gmc sierra hd pickup trucks, now with more power, features, and standard safety equipment.
Explore sierra heavy duty trims. The sierra hd denali ultimate and the sierra hd at4x.