GMC Sierra 2500HD (2015) is 1186 mm (46.69 inch) longer, 186 mm (7.32 inch) wider, 553 mm (21.77 inch) higher and has 1322 liters (46.69 ft3) bigger cargo space than Nissan Maxima (2016).
Nissan Maxima (2016) is 15 kg (33 lbs) lighter than GMC Sierra 2500HD (2015).