Ford F-150 (2017) is 495 mm (19.49 inch) longer, 259 kg (571 lbs) lighter and has 46 liters (1.62 ft3) bigger cargo space than GMC Sierra 2500HD (2018).
GMC Sierra 2500HD (2018) is 23 mm (0.91 inch) wider and 56 mm (2.20 inch) higher than Ford F-150 (2017).