GMC Sierra 2500HD (2020) is 1128 mm (44.41 inch) longer, 153 mm (6.02 inch) wider, 294 mm (11.57 inch) higher and has 862 liters (30.44 ft3) bigger cargo space than Toyota Highlander (2017).
Toyota Highlander (2017) is 745 kg (1,642 lbs) lighter than GMC Sierra 2500HD (2020).