Ford F-250 (2015) is 440 mm (17.32 inch) longer and 45 mm (1.77 inch) higher than GMC Sierra 3500HD (2014).
GMC Sierra 3500HD (2014) is 3 mm (0.12 inch) wider, 478 kg (1,054 lbs) lighter and has 176 liters (6.22 ft3) bigger cargo space than Ford F-250 (2015).