GMC Sierra 3500HD (2017) is 520 mm (20.47 inch) longer, 87 mm (3.43 inch) higher and has 360 liters (12.71 ft3) bigger cargo space than GMC Yukon (2015).
GMC Yukon (2015) is 10 mm (0.39 inch) wider and 231 kg (509 lbs) lighter than GMC Sierra 3500HD (2017).
