FIAT 500L (2018) is 1316 kg (2,901 lbs) lighter than GMC Sierra 2500HD (2020).
GMC Sierra 2500HD (2020) is 1753 mm (69.02 inch) longer, 305 mm (12.01 inch) wider, 355 mm (13.98 inch) higher and has 1529 liters (54.00 ft3) bigger cargo space than FIAT 500L (2018).