Chevrolet Tahoe (2021) is 22 mm (0.87 inch) wider, 36 kg (79 lbs) lighter and has 338 liters (11.94 ft3) bigger cargo space than GMC Sierra 2500HD (2018).
GMC Sierra 2500HD (2018) is 348 mm (13.70 inch) longer and 48 mm (1.89 inch) higher than Chevrolet Tahoe (2021).