GMC Sierra 3500HD (2017) is 419 mm (16.50 inch) longer, 220 mm (8.66 inch) wider, 197 mm (7.76 inch) higher and has 950 liters (33.55 ft3) bigger cargo space than Mitsubishi Triton (2019).
Mitsubishi Triton (2019) is 764 kg (1,684 lbs) lighter than GMC Sierra 3500HD (2017).