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Leak reveals GM's 2017 heavy duty diesel trucks to get 910 lb-ft of torque [UPDATE]

UPDATE: Chevrolet officially announced specs for the 2017 Silverado HD and the rumors were true. The truck's new Duramax 6.6-liter turbo-diesel V8 puts out 445 horsepower and 910 pound-feet of torque. Chevrolet says the new motor produces 19 percent more torque and 12 percent more horsepower, while producing 35 percent fewer emissions. Overall, the new engine is a big improvement over the current motor, which generates 397 horsepower and 765 pound-feet of torque. According to Truck Trend, GM's newest heavy duty pickup trucks will pick up quite a bit more power and torque. The publication spotted a recent GM Powertrain ordering catalog that had the engine specs for the 2017 model year and managed to get some screenshots before the catalog was taken down, and they can be viewed here. The screenshots revealed that the 6.6-liter turbodiesel V8 powering the Silverado and Sierra heavy duty models will boast 445 horsepower and 910 lb-ft of torque. This is a substantial gain over the current models' 397 horsepower and 765 lb-ft of torque, and as Truck Trend points out, it exceeds the Ford Super Duty line's horsepower output of 440, but comes short of the 925 lb-ft rating. Truck Trend credits part of this output gain to the new intake system GM will introduce on the 2017 heavy duties. The intake gets 60 percent of its air from a scoop on the hood, with the other 40 percent coming from behind one of the front fenders. GM doesn't reveal horsepower figures in the press release about the scoop, but it does say the cooler air helps with maintaining the engine's output, and that the scoop does produce a ram-air affect, providing more air at speed. As we know, more air plus more fuel equals more power, but there's likely more to the power increase in this engine than only the intake. Related Video: News Source: Truck Trend via MSN Chevrolet GM GMC Truck Diesel Vehicles

What the electric Hummer's size and weight means for its efficiency

The 2022 GMC Hummer EV Edition 1. Tim Levin/Insider If you think driving a pint-sized Nissan Leaf is as good for the planet as driving a huge electric Hummer, think again.  The GMC Hummer EV uses significantly more electricity than other EVs, meaning it produces more pollution upstream.  The electric Hummer weighs 9,000 pounds and its battery weighs as much as a Honda Civic. The new electric Hummer rolls through town without a deafening engine rumble or a cloud of toxic fumes, but it doesn't exactly tread lightly.  The colossal truck weighs an astonishing 9,000 pounds. (Think two Toyota Tacomas, three Honda Civics, or 24 Shaquille O'Neals.) Moreover, the GMC Hummer EV is in many ways a supersized gas guzzler for a new era. It repackages many of the same flaws of hulking SUVs and trucks of years past — and proves not all zero-emission cars are created equal. EVs can be energy guzzlers too On the whole, electric cars use less energy than gas-powered ones. But they aren't all equally efficient.  No surprise here: The Hummer needs more electricity than any other EV on the market to move its elephantine frame. The Environmental Protection Agency rates the pickup at 47 MPGe (miles per gallon of gasoline-equivalent). For comparison, the Tesla Model 3 sedan is nearly three times as efficient, earning a rating of 132 MPGe. The Ford F-150 Lightning, another electric truck, gets 70 MPGe.  This has real consequences: Since the US gets 61% of its energy from oil, coal, and natural gas, the more electricity a car needs, the more pollution it creates upstream.  As the Union of Concerned Scientists put it: "Both EV cars and trucks are much cleaner than their gasoline counterparts, but electric trucks are responsible for more global warming emissions than electric cars simply because trucks are larger and heavier."  The 2022 GMC Hummer EV Edition 1. Tim Levin/Insider The Hummer EV is also resource-intensive to manufacture, requiring a ginormous (and weighty) battery to give people the 300-plus miles of range they desire. You could produce three Chevrolet Bolts with the same battery cells consumed by one Hummer.

2018 GMC Canyon Denali isn't worth the money

In the GMC lineup, Denali is the top dog. It's the trim with all the bells and whistles, and often provides an experience comparable to Cadillac. Unfortunately that's not the case in the GMC Canyon Denali we drove recently. In the Canyon's case, the Denali trim isn't worth the price premium because it isn't luxurious enough and doesn't distinguish itself from the midlevel SLT trim. While the outside maintains the Denali look with a unique chrome grille, chrome door handles, 20-inch wheels, and big Denali badges (which a guy at a car wash immediately noticed when this editor drove past), the interior and feature set don't rise to meet the borderline Cadillac image of Denali. All GMC did to spruce up the already drab, gray, plasticky interior of the Canyon was give it black leather, some real aluminum trim, some fake wood trim, and stitched soft-touch surfaces. The aluminum and leather are nice touches, but they don't look much different from the black and aluminum-look plastic in lower trim models. The fake wood also looks really fake. They're also exactly the same upgrades as what you'll find in an SLT. But the SLT offers a dark brown color scheme as an option, which would help alleviate the dinginess, and the SLT, equipped exactly like a base Denali, costs $2,690 less at $41,575. The same issue comes up with equipment. The Denali has heated seats and steering wheel, navigation, automatic climate and navigation, but so does the SLT. The big problem here is that Denali is supposed to indicate the best, most luxurious vehicle GMC has to offer, but there's not enough differentiation — or specialness, even — to separate it from a well-optioned SLT. GMC needs to give the Denali something more. It needs some real wood trim, or perhaps some interior schemes with contrasting materials you can't find in other Canyons. It should have some other special luxury features included that can't be added to lower trim GMCs such as a heads-up display, automatic windshield wipers, push-button keyless entry and starting, things like that. The real reason to buy the Canyon Denali is really to get the prestige that the Denali badge brings, rather than the specific equipment it has — the Denali name has some value, after all. But if you can look past the badge and focus on practicality, the SLT is the runaway winner, offering the exact same experience for a notably lower price.