GMC Sierra 3500HD (2018) is 1043 mm (41.06 inch) longer, 145 mm (5.71 inch) wider, 318 mm (12.52 inch) higher and has 1641 liters (57.95 ft3) bigger cargo space than Mercedes GLC-Class (2014).
Mercedes GLC-Class (2014) is 615 kg (1,356 lbs) lighter than GMC Sierra 3500HD (2018).