Acura RLX (2015) is 835 kg (1,841 lbs) lighter than GMC Sierra 3500HD (2014).
GMC Sierra 3500HD (2014) is 847 mm (33.35 inch) longer, 142 mm (5.59 inch) wider, 514 mm (20.24 inch) higher and has 1569 liters (55.41 ft3) bigger cargo space than Acura RLX (2015).