Road Test: 2021 GMC Sierra 1500 Duramax 4WD Crew Cab AT4 CarbonPro
Clean Fleet Report
MARCH 30, 2021
The 2021 GMC Sierra 1500 Duramax 4WD Crew Cab AT4 CarbonPro showed-up in my driveway and the neighbors took notice. Power and Torque and Fuel Sipping. recently drove the 2021 GMC Sierra 1500 4WD Crew Cab AT4, powered by a 3.0-liter The well laid-out interior uses upgraded materials, many of which rival the high-end GMC Denali.
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