2017 GMC Duramax Diesel lineup-of-street knocks 445hp


2017 GMC Duramax Diesel lineup-of-street knocks 445hp

2017 GMC Duramax Diesel lineup-of-street knocks 445hp

2017 GMC Duramax Diesel lineup-of-street knocks 445hp

GMC adds an overwhelming obligation truck to its rough terrain prepared lineup with the '17 Sierra HD All Terrain X controlled by General Motors' fifth-era 6.6L Duramax turbodiesel V-8.

The monochromatic All Terrain X bundle incorporates 18-in. dark painted aluminum wheels shod with Goodyear Duratrac rough terrain tires, Z71 rough terrain suspension, underbody slide shield and an Eaton locking back differential. The truck is offered in Black Onyx or Summit White.

Revealed at a media occasion in Austin, TX, the trail-prepared team taxi 4x4 joins the Canyon and light-obligation Sierra 1500 in the brand's All Terrain X portfolio.


"The new Sierra HD All Terrain X's capable demeanor mirrors a prominent pattern in exceptionally able rough terrain trucks, executed with a range-topping level of refinement – a blend of traits GMC has developed for a considerable length of time," says Duncan Aldred, VP GMC Sales and Marketing. "Furthermore, with the new, accessible Duramax 6.6L, this truck more than matches its strong great looks with genuine expert review capacity."

2016 GMC Duramax Diesel motor


Landscape X purchasers pick between the all-new Duramax or a 6.0L fuel V-8 likewise offered on the Chevrolet Silverado HD. The Duramax, codenamed L5P, conveys 445 hp and 910 lb.- ft. (1,234 Nm) of torque, up 13% and 19%, separately, from 397 hp and 765 lb.- ft. (1,037 Nm) in the fourth-era LML Duramax.

Gary Arvan, boss specialist and program chief for the Duramax HD diesel, says despite the fact that the motor remains a 90-degree V-8 with the same bore and stroke (103 mm x 99 mm), valvetrain engineering and cast-press obstruct with aluminum heads, 90% of the L5P part numbers are new and the whole structure and square is moved up to handle a 20% expansion in chamber weight to 2,611 psi (180 bar).

A substantial obligation oil separator catches motor oil from pass up gasses and utilizations turbo support weight to give back the oil to the crankcase under overwhelming burdens.

New are the chamber heads, crankshaft, cylinders, cylinder sticks and associating poles, with consideration regarding better cooling, decreased grinding and better load-bearing abilities. The motor gets another turbocharger, a redesigned fuel framework, consumption port updates, high-temperature ventilation systems and enhanced wind current to improve execution.

A one of a kind air admission framework utilizes another hood scoop as a part of expansion to a bumper mounted air scoop to acquire cool air to hold consumption temperatures down, empowering enhanced motor execution particularly under substantial burdens, says Tom Dye, lead advancement design.

Color says the hood scoop required exceptional regard for keep rain water from entering the admission complex and hurting motor execution. To keep water from getting in, architects concocted air-allow funneling that makes a few sharp turns and extends, changing pneumatic force with the goal that dampness drops out into a gatherer before the cool, dry air achieves the admission complex.

Brief test drives of a '17 Silverado HD outfitted with the new Duramax motor uncover considerable power, with solid draw accessible from as low as 1,550 rpm. GM says the motor enhancements result in a 0.7-second decrease in 0-60 mph (97 km/h) time to 7.1 seconds, and additionally better reaction in 50-70 mph (80-113 km/h) increasing speed.

The motor additionally is 38% calmer out of gear than its antecedent and gloats a 35% lessening in discharges, GM says.

The new Duramax is created at GM's Moraine, OH, plant. The '17 overwhelming obligation pickups go at a bargain in mid 2017.

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