GMC Sierra 2500HD (2017) is 856 mm (33.70 inch) longer, 110 mm (4.33 inch) wider, 160 mm (6.30 inch) higher and has 407 liters (14.37 ft3) bigger cargo space than Toyota 4Runner (2018).
Toyota 4Runner (2018) is 425 kg (937 lbs) lighter than GMC Sierra 2500HD (2017).