BMW 6 Series Gran Turismo (2018) is 908 kg (2,002 lbs) lighter than GMC Sierra 3500HD (2015).
GMC Sierra 3500HD (2015) is 610 mm (24.02 inch) longer, 133 mm (5.24 inch) wider, 412 mm (16.22 inch) higher and has 1382 liters (48.80 ft3) bigger cargo space than BMW 6 Series Gran Turismo (2018).