GMC Sierra 3500HD (2014) is 549 mm (21.61 inch) longer, 217 mm (8.54 inch) wider, 199 mm (7.83 inch) higher and has 950 liters (33.55 ft3) bigger cargo space than Mitsubishi Triton (2018).
Mitsubishi Triton (2018) is 669 kg (1,475 lbs) lighter than GMC Sierra 3500HD (2014).