GMC Sierra 3500HD (2019) is 1427 mm (56.18 inch) longer, 155 mm (6.10 inch) wider, 331 mm (13.03 inch) higher and has 1488 liters (52.55 ft3) bigger cargo space than Mercedes GLC-Class (2015).
Mercedes GLC-Class (2015) is 813 kg (1,792 lbs) lighter than GMC Sierra 3500HD (2019).