GMC Sierra 2500HD (2016) is 6 mm (0.24 inch) wider, 51 mm (2.01 inch) higher and has 302 liters (10.66 ft3) bigger cargo space than Toyota Tundra (2019).
Toyota Tundra (2019) is 115 mm (4.53 inch) longer and 441 kg (972 lbs) lighter than GMC Sierra 2500HD (2016).