GMC Sierra 3500HD (2017) is 855 mm (33.66 inch) longer, 110 mm (4.33 inch) wider, 161 mm (6.34 inch) higher and has 680 liters (24.01 ft3) bigger cargo space than Toyota 4Runner (2018).
Toyota 4Runner (2018) is 535 kg (1,179 lbs) lighter than GMC Sierra 3500HD (2017).