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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

GMC teases Hummer EV's removable roof panels

Today was supposed to be the day that GM took the wraps off its GMC Hummer EV. We were told as much during the Super Bowl commercial, but GM revised it to an undecided future date, citing the coronavirus as the reason. Instead of the big reveal, we have a teaser.  The Hummer EV is going to feature removable roof panels, and now we get a better look at them. There are four roof panels and a front T-bar that come out of the truck. You can see what that looks like in the video at the top of this post. Comparisons to Jeep are obvious as the open-air experience is likely similar to the Gladiator and Wrangler with their hardtop roof panels removed. That zero-limits slogan makes a bit of sense from this respect. With the sheer number of roof panels, we suspect a single person will be able to remove them alone. In addition to the video of the roof, we get a small peek at the massive digital screens the Hummer will be sporting. Check them out at the bottom of the photo below. They appear to be two large slabs, separate from each other. Other details are scarce on the ground. We’re not sure when the Hummer will make its grand entrance at this point, but are still excited to see the 1,000-horsepower truck hit the road. GMC is still advertising the 0-60 mph time of just 3 seconds, too. The latest tidbit of news suggests that further teasers might be coming, so we could be in for a rather drawn out reveal process. Our senior green editor John Snyder got to see the GMC Hummer in person earlier this year at GMÂ’s EV Day and described it like this: “ItÂ’s a big, off-road-ready pickup complete with giant all-terrain rubber and tow hooks. It features removable roof panels for access to the open sky, which appears to be depicted in the teaser above. It features sail panels behind the C-pillars, similar to those on the Chevy Avalanche and Honda Ridgeline. Its bed was concealed with a tonneau cover, but it sported GMCÂ’s MultiPro tailgate that we first saw on the Sierra Denali. Interior photos showed a spacious interior with blocky shapes, squared hourglass vents that mirror the look of the taillights and a lunar theme that incorporates the topography of the Sea of Tranquility into things like the floor mats and speaker covers. It also has a large infotainment screen as well as a digital instrument panel.” Related video:

2024 GMC Sierra prices go up — and also down

The 2024 GMC Sierra 1500 is ready to work the yard, but how much you'll need to get the pickup back to your yard has changed compared to the 2023 Sierra — most often in a good way. The changes for the new model year aren't substantive, just enough to give Sierra lovers enough modification to prove they have the latest. The AT4X was only available with the 6.2-liter V8 in 2023; for 2024 the big bad off-road trim makes the 3.0-liter Duramax diesel inline-six the standard engine and takes $2,400 off the base price compared to last year's 6.2-liter. On top of that, the 6.2-liter AT4X costs $500 less than last year. Re: the gas V8, this is the opposite of the hefty increases we've seen Chevrolet generally do with 6.2-powered trims. The SLT, AT4, AT4X, Denali, and Denali Ultimate get the option of an active exhaust on four-wheel-drive trims with the 6.2-liter for $395. The 2.7-liter Turbo H.O. four-cylinder gas engine is rebranded TurboMax and comes with a five-year, 100,000-mile warranty. Two new wheel designs enter the catalog, availability depending on trim, and colors join the palette, their availability also trim-dependent: Downpour Metallic replacing Pacific Blue Metallic, and Thunderstorm Grey, both adding $495 to the price. Now to the haggling. Even though destination has risen $100, to $1,995, five of the eight trims — including the diesel AT4X — are less expensive than they were a year ago, some of them by $1,000. The new sums after destination and their differences from 2023 are:  Sierra Pro Regular Cab Standard Box 2WD TurboMax: $39,695 ($700) SLE Double Cab Std Box 2WD TurboMax $51,095 ($1,000 less) Elevation Double Cab 2WD TurboMax $52,795 ($1,000 less) SLT Crew Cab Short Box 2WD 5.3L V8 $56,795 ($1,000 less) AT4 Crew Cab Short Box 4WD Duramax 3.0L I6 $68,595 ($500 less) AT4X Crew Cab Short Box 4WD Duramax 3.0L I6 $81,195 (New trim) Denali Crew Cab Short Box 2WD 5.3L V8 L84 $68,595 ($1,000) Denali Ultimate Crew Cab Short Box 4WD Duramax 3.0L I6 $83,490 ($500) Since certain varieties of the 2023 Sierras are still on the configurator and in dealer inventory, any business wanting to take a tax loss for 2023 should buy the older Sierra. Regular buyers willing to forego the new bits on the 2024 Sierra will likely be able to find dealers ready to take a machete to the MSRPs of some 2023 Sierras sitting on the lot.