GMC Sierra 3500HD (2016) is 760 mm (29.92 inch) longer, 39 mm (1.54 inch) wider, 178 mm (7.01 inch) higher and has 666 liters (23.52 ft3) bigger cargo space than Honda Pilot (2018).
Honda Pilot (2018) is 860 kg (1,896 lbs) lighter than GMC Sierra 3500HD (2016).
