BMW 6 Series Gran Turismo (2018) is 824 kg (1,817 lbs) lighter than GMC Sierra 3500HD (2014).
GMC Sierra 3500HD (2014) is 739 mm (29.09 inch) longer, 130 mm (5.12 inch) wider, 440 mm (17.32 inch) higher and has 1382 liters (48.80 ft3) bigger cargo space than BMW 6 Series Gran Turismo (2018).