FIAT 500L (2017) is 136 kg (300 lbs) lighter than GMC Sierra 2500HD (2015).
GMC Sierra 2500HD (2015) is 1854 mm (72.99 inch) longer, 272 mm (10.71 inch) wider, 319 mm (12.56 inch) higher and has 1529 liters (54.00 ft3) bigger cargo space than FIAT 500L (2017).