Chevrolet Tahoe (2018) is 13 mm (0.51 inch) wider and 377 kg (831 lbs) lighter than GMC Sierra 2500HD (2014).
GMC Sierra 2500HD (2014) is 536 mm (21.10 inch) longer, 79 mm (3.11 inch) higher and has 254 liters (8.97 ft3) bigger cargo space than Chevrolet Tahoe (2018).