2020 GMC Sierra Heavy Duty revealed

The 2020 Sierra Heavy Duty has been revealed, heralding in a new age of towing and trailer technology.

That tech is an upgraded ProGrade Trailering System, first seen in the 2019 Sierra Light Duty. The system utilises 15 cameras to optimise the driver’s view around the truck and (compatible) trailer combo. It also features a ‘transparent trailer’ feature – similar to tech displayed at the 2019 Consumer Electronics Show – allowing the driver to see ‘through’ the trailer; made possible by the installation of a tailgate-mounted camera and an (available) accessory camera mounted to the rear of the trailer.

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“Trailering is the most important consideration for Sierra Heavy Duty customers, and the new features and technologies in the 2020 Sierra HD make it easier than ever to hitch a trailer and tow it confidently,” said Jaclyn McQuaid, vehicle chief engineer of Heavy Duty Trucks. “We’ve developed this new truck to offer the greatest trailering experience ever offered by GMC.”

Other technology implemented to aid trailering includes larger trailering mirrors, an integrated trailer brake controller, Tow/Haul mode, Hill Start Assist and Hill Descent Control, Digital Variable Steering Assist, and Park Grade Hold Assist.

The Sierra HD is taller and longer than the model it replaces, with a longer wheelbase, a larger grille, a more aggressive hood line, LED illumination, “best-in-class” head- and leg-room (Crew Cab models) and an all-new Allison 10-speed automatic transmission.

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The Allison transmission features closer gear spacing to optimise the performance of the Duramax 6.6-litre turbo-diesel engine, which generates 445 horses (332kW) and 1234Nm. Performance is also upped from the previous model due to the improved cooling capacity – thanks in part to the generous hood scoop on the bonnet and the larger grille – giving the big truck a towing capacity in excess of 13,500kg.

The new Sierra gets a new 120-volt power outlet in the tray, cargo bed side-steps, and the tray is an inch lower to ground to make it easier to load and unload.

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“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 Sierra HD – in 2500HD and 3500HD dual rear wheel and single rear wheel configurations – will be in US showrooms later this year.