Gmc Sierra At4 2024 Specs. Gmc's heavy hauler, the sierra hd pickup with the diesel engine, is rated to tow up to 22,500 pounds conventionally or 36,000 with a gooseneck hitch fitted. The specs below are for the 2024 gmc sierra 1500 pro 2wd, the sierra 1500 is available in a variety of configurations, the.

Choose from either a gmc sierra 2500 hd or 3500 hd at4, and learn more about the vehicle specs, trims, and features available. Gmc’s star student is the.