Vehicle of the Week

Vehicle of the Week

2021 GMC Sierra 2500HD AT4 — Turbo diesel performance



By Jim Meachen and Ted Biederman

(May 2, 2021) If your goal is to make the biggest statement possible in terms of performance, off-roading, towing, payload, interior refinement and advanced technologies all in one truck look no further than your nearest GMC dealer. Check out the 2021 off-road-ready GMC Sierra 2500HD AT4 Crew Cab with the 6.6-liter Duramax turbo diesel V-8 paired to a 10-speed Allison automatic transmission.