GMC Sierra 2500HD (2017) is 490 mm (19.29 inch) longer, 6 mm (0.24 inch) wider, 20 mm (0.79 inch) higher and 118 kg (260 lbs) lighter than Toyota Sequoia (2018).
Toyota Sequoia (2018) has 167 liters (5.90 ft3) bigger cargo space than GMC Sierra 2500HD (2017).