GMC Sierra 2500HD (2015) is 873 mm (34.37 inch) longer, 16 mm (0.63 inch) wider, 32 mm (1.26 inch) higher and 1133 kg (2,498 lbs) lighter than Toyota Sequoia (2018).
Toyota Sequoia (2018) has 158 liters (5.58 ft3) bigger cargo space than GMC Sierra 2500HD (2015).