GMC Sierra 2500HD (2014) is 861 mm (33.90 inch) longer, 107 mm (4.21 inch) wider, 239 mm (9.41 inch) higher and has 853 liters (30.12 ft3) bigger cargo space than Toyota Highlander (2015).
Toyota Highlander (2015) is 894 kg (1,971 lbs) lighter than GMC Sierra 2500HD (2014).