2021 GMC Sierra

Road Test: 2021 GMC Sierra 1500 Duramax 4WD Crew Cab AT4 CarbonPro

January 7, 2026March 30, 2021 by John Faulkner

Is the 2021 GMC Sierra 1500 Duramax the best 1500 pickup on the market? Talking with “truck guys and gals” and reading truck forums, it seems to be near or at the very top.

Categories All-Wheel Drive, AWD, Clean Diesel, Test Drives Tags 2021 GMC Sierra, clean diesel, diesel, Duramax, four-wheel drive, Fuel economy, mpg, road test, test drive

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