GMC expanded the Sierra 2500HD model's range of exterior paint colors for 2022. The available body styles include regular-cab, extended-cab, and crew-cab variants, and GMC offers two cargo bed lengths. A 6.6-liter V8 with 401 horsepower and 464 pound-feet of torque is standard, and you can upgrade to a turbo-diesel engine with 445 horsepower and 910 lb-ft. Fuel-economy estimates are unavailable because the EPA doesn't rate heavy-duty pickup trucks. Depending on the engine and cab style, the 2022 GMC Sierra 2500HD tows up to 18,500 pounds with conventional trailering and 18,510 pounds with a fifth-wheel/gooseneck setup.