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The heavy-duty truck market is one of the most competitive segments in the automotive industry. With Ford and Ram delivering strong offerings in their own right, GMC is looking to level the playing field with the 2017 Sierra HD. The truck?s redesigned Duramax 6.6L V-8 turbo-diesel is something loyal GMC buyers will appreciate.
?With nearly 2 million sold over the past 15 years, customers have forged a bond with the Duramax diesel based on trust and capability,? said Dan Nicholson, Vice President, GM Global Propulsion Systems.
Typical with HD trucks, the new GMC Sierra will see a multitude of difficult jobs. Robust payloads like bricks, seed corn bags, lumber, and stacked pallets are common in the bed of any given Sierra. It?s not unusual to see them towing heavy horse trailers with enclosed living quarters or a 5th wheel camper. ?The new Duramax takes those traits to higher levels,? Nicholson said.
New Horizons
The 2017 GMC Sierra HD is SAE-certified at 445 horsepower (332 kW) and net 910 lb-ft. of torque (1,234 Nm), marking a 19 percent increase in max torque over the current Duramax. Innovative designs contributed to the increase in performance.
?Nearly everything about the Duramax is new, designed to produce more torque at lower rpm, and more confidence when trailering or hauling,? said Gary Arvan, Chief Engineer.
An enhanced, higher flow oiling circuit provides a dedicated feed for the turbocharger, meaning increas...