2025 Gmc Sierra Hd Specs. The 2025 gmc sierra hd work truck pulls your world with turbocharged power and an impressive lineup of trims. With an impressive towing capacity of up to 20,000 pounds depending on your chosen engine and cab configuration, the sierra 2500 hd ensures you can confidently handle every job, big or.
With its redesigned exterior, refined interior, impressive powertrain options,. 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.