Road Test: 2021 GMC Sierra 1500 Duramax 4WD Crew Cab AT4 CarbonPro
Clean Fleet Report
MARCH 30, 2021
Power and Torque and Fuel Sipping. Clean Fleet Report. Fuel economy numbers reported by Clean Fleet Report are non-scientific and represent the reviewer’s driving experience using the dash gauge computer. Clean Fleet Report. Clean Fleet Report. Brains and brawn. liter Duramax turbodiesel engine. Bold Design.
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