Chevrolet Tahoe (2021) is 22 mm (0.87 inch) wider, 135 kg (298 lbs) lighter and has 65 liters (2.30 ft3) bigger cargo space than GMC Sierra 3500HD (2015).
GMC Sierra 3500HD (2015) is 348 mm (13.70 inch) longer and 23 mm (0.91 inch) higher than Chevrolet Tahoe (2021).