Next-Generation 2020 GMC Sierra Heavy Duty Coming Late Summer

GMC AT4 off-roading brand has also introduced the all-new Sierra AT4 Heavy Duty


The American automaker has introduced the next generation 2020 GMC Sierra Heavy Duty pickups alongside an all-new AT4 version taking design cues from the upgrades made last year. The heavy-duty trucks feature the MultiPro six-function tailgate, rear-camera mirror, and ProGrade Trailering system. All these features are borrowed from the redesigned flagship Sierra 1500 light-duty pickup introduced last year. GMC AT4 off-roading brand brings the all-new Sierra AT4 Heavy Duty in crew cab configurations.

“The all-new 2020 Sierra HD is the most capable heavy-duty truck that we’ve ever offered,” said Duncan Aldred, vice president of Global GMC. “For customers who demand a premium, innovative heavy-duty truck that supports their passions, the next-generation Sierra HD can pull like a pro.”

The 2020 GMC Sierra Heavy Duty is taller and longer than the previous generation models. The truck is powered by a 6.6-liter Duramax turbo-diesel cranking 445 hp and 910 pound-feet of torque. The engine is paired with an all-new 10-speed Allison automatic transmission. Thanks to the larger frame and more powerful engine, the Sierra HD can tow over 30,000 pounds. GMC demonstrated the towing prowess by pulling an 80-foot yacht weighing 225,000 pounds with the aid of a fifth-wheel hitch.

2020 GMC Sierra HD AT4 Interior

Inside, the automaker has made it roomier than before. The headroom, legroom and seating height all got better. The Denali gets exclusive leather seats, open-pore wood accents, and dark-finish aluminum trim.

The AT4 Heavy Duty comes with its own set of features including dark-chrome exterior finishes, a grille-surround

2020 GMC Sierra 2500 HD AT4

polished in body color, and dark & textured aluminum textures on the steering wheel, center stack and sill plates. Moreover, the Sierra AT4 Heavy Duty boasts an off-road suspension, Rancho shocks, skid plates, Eaton locking rear-differential and regular 18-inch wheels with Michelin all-terrain tires.


The 2020 GMC Sierra Heavy Duty will go on sale this summer competing against the likes of Super Duty F-250 and F-350, and new Ram 2500 and 3500 Heavy Duty. The pricing details are unknown. However, we know the 2018 2500 Crew Cab starts at AED 202,000.

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