GMC Sierra 3500HD (2017) is 604 mm (23.78 inch) longer, 135 mm (5.31 inch) wider, 491 mm (19.33 inch) higher and has 1541 liters (54.42 ft3) bigger cargo space than Kia K900 (2016).
Kia K900 (2016) is 729 kg (1,607 lbs) lighter than GMC Sierra 3500HD (2017).
