When GMC debuted the all-new 2020 Sierra HD last month, it only showed the range-topping SLT, AT4 and Denali trim levels in the largest Crew Cab configuration. A few weeks later, we managed to spy the Double Cab model. And today, we caught the Regular Cab, Long Box body style, which we haven’t seen before. So, here’s our first look at the 2020 GMC Sierra Regular Cab.
The model seen here is the Sierra 2500HD in base trimmings, which is somewhat analogous to the Work Truck trim on the Sierra HD’s corporate cousin, the Silverado HD. In fact, this also marks the first time we’ve seen the new Sierra HD in its base trim.
As the photos show, the Regular Cab, Long Box configuration is not at all a looker due to its rather disjointed proportions, small steel wheels, and not a lot of design flair. But looks are not its purpose. Instead, this configuration is all about functionality – hauling, towing, and getting work done.
As indicated by the badge fore of the mirrors, the model seen here is powered by the GM’s new 6.6L V8 L8T gasoline engine making 401 horsepower and 464 pound-feet of torque mated to GM’s six-speed 6L90 automatic transmission. The body and powertrain configuration is rated at a maximum 17,400 pounds towing capacity via 5th wheel/gooseneck and 14,500 via the conventional hitch.
A few noteworthy elements including the full-LED forward lighting with GMC’s signature C-shaped elements as part of the Daytime Running Lights (DRLs), blanked out fog light/accent light spacers on the chrome front bumper, a basic black grille with the large GMC logo, and the prominent air intake on the hood, despite this being a gasoline-powered model.
On the side, the BedStep feature is prominently present where the box begins, the new door-mounted trailering mirrors are present and accounted for, and the wheel wells with four curves are unique to the 2020 GMC Sierra HD (the Silverado’s wheel wells have a more round shape), with amber reflectors placed at the top portion of each wheel well. Finally, take note of the basic 17-inch steel wheels, the single, straight-through exhaust outlet, and what appears to be regular, and incandescent taillamps.