GMC Sierra 2500HD (2018) is 846 mm (33.31 inch) longer, 110 mm (4.33 inch) wider, 246 mm (9.69 inch) higher and has 853 liters (30.12 ft3) bigger cargo space than Toyota Highlander (2014).
Toyota Highlander (2014) is 580 kg (1,279 lbs) lighter than GMC Sierra 2500HD (2018).