Ford F-250 (2014) is 569 mm (22.40 inch) longer and 73 mm (2.87 inch) higher than GMC Sierra 3500HD (2015).
GMC Sierra 3500HD (2015) is 6 mm (0.24 inch) wider, 2967 kg (6,541 lbs) lighter and has 176 liters (6.22 ft3) bigger cargo space than Ford F-250 (2014).