GMC Sierra 3500HD (2014) is 495 mm (19.49 inch) longer, 36 mm (1.42 inch) wider, 44 mm (1.73 inch) higher and has 1031 liters (36.41 ft3) bigger cargo space than Honda Ridgeline (2018).
Honda Ridgeline (2018) is 695 kg (1,532 lbs) lighter than GMC Sierra 3500HD (2014).