GMC Sierra 1500 (2015) is 13 mm (0.51 inch) wider, 295 kg (650 lbs) lighter and has 41 liters (1.45 ft3) bigger cargo space than Nissan Titan XD (2016).
Nissan Titan XD (2016) is 474 mm (18.66 inch) longer and 79 mm (3.11 inch) higher than GMC Sierra 1500 (2015).
