GMC Sierra 3500HD (2014) is 967 mm (38.07 inch) longer, 38 mm (1.50 inch) wider, 176 mm (6.93 inch) higher and has 641 liters (22.64 ft3) bigger cargo space than Honda Pilot (2015).
Honda Pilot (2015) is 555 kg (1,224 lbs) lighter than GMC Sierra 3500HD (2014).