GMC Sierra 2500HD (2018) is 1334 mm (52.52 inch) longer, 270 mm (10.63 inch) wider, 427 mm (16.81 inch) higher and has 1288 liters (45.49 ft3) bigger cargo space than Toyota Matrix (2017).
Toyota Matrix (2017) is 1314 kg (2,897 lbs) lighter than GMC Sierra 2500HD (2018).