2017 GMC Duramax 6.6L Diesel

All-New 2017 GMC Duramax 6.6L Diesel

When it comes to horsepower from a diesel engine, the 2017 GMC Sierra HD tops the segment with an SAE-certified 445 hp (332 kW) from an all-new Duramax 6.6L V-8 turbo-diesel. And when it comes to the torque that enables effortless trailering and hauling, it also delivers more than ever: an SAE-certified net 910 lb.-ft. of torque (1,234 Nm) to make easier work of the heaviest loads. 

Along with a 19 percent increase in max torque over the current Duramax 6.6L and segment-best horsepower, the redesigned turbo-diesel’s performance is quieter and smoother, for greater refinement and more confidence when trailering or hauling.

The new Duramax 6.6L is a next-generation redesign of the venerable turbo-diesel engine and incorporates a new, GM-developed control system. The Duramax’s signature low-rpm torque production hasn’t changed, offering 90 percent of peak torque at a low 1,550 rpm and sustaining it through 2,850 rpm — an attribute that contributes to the Sierra HD’s confident pulling power.

A new, patent-pending vehicle air intake system — distinguished on the Sierra HD by a bold hood scoop — drives cool, dry air into the engine for sustained performance and cooler engine temperatures during difficult conditions such as trailering on steep grades. Cooler air helps the engine run better under load, especially in conditions where engine and transmission temperatures can rise quickly. That allows the Duramax to maintain more power and vehicle speed when trailering in the toughest conditions.

Driveline enhancements were made to increase strength and enhance durability, including a stronger front prop shaft and larger U-joints compared to previous Duramax-equipped Sierra HD models.

Additional highlights include:

• New full-length, damped steel oil pan that contributes to quietness
• New rocker cover/fuel system acoustical treatments
• B20 bio-diesel compatibility
• SAE-certified 445 net horsepower (332 kW) at 2,800 rpm
• SAE-certified 910 net lb.-ft. of torque (1,234 Nm) at 1,600 rpm
• The new Duramax 6.6L turbo-diesel engine is produced with locally and globally sourced parts at GM’s manufacturing facility in Moraine, Ohio. It will be available in the Sierra HD in early 2017.

2017 Sierra HD lineup

When it comes to delivering the capability on which GMC’s reputation was forged, Sierra 2500HD and 3500HD models — including Sierra Denali HD — are offered with gas and Duramax diesel propulsion systems. They enable a maximum conventional trailering rating of 9,072 kilograms (20,000 lbs) and a max fifth-wheel/gooseneck trailering rating of 10,568 kilograms (23,300 lbs).

Regular, double cab and crew cab models are offered across the lineup, with the premium Sierra Denali HD — the ultimate expression of GMC’s Professional Grade ethos — offered exclusively as a crew cab. It matches GMC’s do-it-all capability with distinctive styling elements, premium materials and upscale interior amenities.

Additionally, the All Terrain HD premium off-road package is the most capable off-pavement model, featuring unique exterior details and 18-inch chrome aluminum wheels with all-terrain tires, the Z71 suspension with Rancho twin-tube shocks and more.

In addition to the new Duramax 6.6L turbo-diesel engine, the 2017 Sierra HD lineup offers Teen Driver, which allows parents to set controls, review driving habits and encourage safe driving habits when they are not in the vehicle.

Additional vehicle highlights:

• An available Gooseneck/5th Wheel Trailering Prep Package makes Sierra HD models ready to tow larger trailers right from the factory.
• Digital Steering Assist power steering on select models senses speed to enable ease of handling at low speeds and improved steering feel at highway speeds. It helps make trailering easier when parking or on the road.
• HID projector-beam headlamps with GMC-signature LED lighting is standard on all models
• Available wireless phone charging (standard on Denali)
• Available remote locking tailgate (standard on Denali)

For more information on the exciting new 2017 GMC Sierra HD Lineup, contact Western GMC Buick on our website, call 780-486-3333 or visit us in person at 18325 Stony Plain Rd, Edmonton.

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Source: GM Canada