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2024 GMC Sierra HD unveiled with new design and more powerful turbodiesel V8

The 2024 Chevrolet Silverado HD made its debut in September 2022, so it was only a matter of time before the GMC Sierra HD received a similar round of updates. Unveiled online, the truck gains a new-look design and a more powerful turbodiesel V8, among other changes. GMC developed the Sierra HD primarily for towing and hauling so the most significant changes are found under the hood. The available 6.6-liter turbodiesel Duramax V8 engine now develops 470 horsepower at 2,800 rpm and 975 pound-feet of torque at 1,600 rpm, figures that represent increases of 25 and 65, respectively, over the 2023 model and that match the 2024 Silverado HD's. GMC notes it increased low-end torque by about 25% by fitting a new turbocharger. The V8 spins the rear or the four wheels via a 10-speed automatic transmission.  On the gasoline side of the spectrum, the 6.6-liter V8's output stays flat at 401 horsepower and 464 pound-feet of torque. It's now bolted to a 10-speed automatic transmission, and replacing the 2023 truck's six-speed lets the engine run closer to its peak power for longer periods. Here again, rear-wheel-drive comes standard and a part-time four-wheel-drive system is available across the entire line-up. Properly equipped, the 2024 Sierra 2500 HD Crew Cab can tow up to 21,900 pounds. The standard 2500 HD's towing capacity checks in at 22,500 pounds (a 4,000-pound improvement), and the 3500 HD is capable of towing up to 36,000 pounds — that's nearly 13 Subaru BRZs. Buyers have a dizzying selection of trim levels and body styles to choose from. The range includes Regular, Extended, and Crew cabs as well as seven trim levels called Pro, SLE, SLT, AT4, AT4X, Denali, and Denali Ultimate, respectively. The AT4X variant will not be available at launch, and the Denali Ultimate is new for the 2024 model year. Additionally, 3500 HD models can be ordered with dual rear wheels. What the truck looks like depends on the trim level. Broadly speaking, designers drew a more angular front end with a new-look grille, sharper-looking lights, and a redesigned bumper. New wheels are part of the update as well; the 3500 HD dually gets 18-inch polished aluminum wheels, and 22-inch units are optional on single-rear-wheel trucks. Finally, the color palette grows with six optional shades called Titanium Rush Metallic, Sterling Metallic, Volcanic Red Tintcoat, Redwood Metallic, Meteorite Metallic, and Downpour Metallic, respectively.

These are the 'Greenest' and 'Meanest' cars in 2015

As has become tradition, the American Council for an Energy-Efficient Economy (ACEEE) has come up with a ranking of what it refers to as the "greenest" cars of 2015, and, by way of contrast, a list of the so-called "meanest" cars, so those who value eco-friendliness over all else can choose which vehicles they should or should not consider buying. As you may expect, electric cars make up the majority of the greenest cars on the list, but, perhaps surprisingly to many, the Tesla Model S didn't make the cut. It's worth noting, too, that where the electricity an owner uses to charge their electric vehicle has a big impact on its overall environmental impact. "A car that is charged using electricity generated from natural gas or renewables is going to have significantly less impact on the environment than one charged on a coal-heavy grid," says ACEEE lead vehicle analyst Shruti Vaidyanathan. The ACEEE's list for 2015 looks very different than it did in 2014. It's an interesting collection, though – and we're sure this goes without saying, really – we'd recommend doing a bit more research into each vehicle and how it might fit into your daily life before making any purchase decisions. Click here to see the ACEEE's list of the Greenest and Meanest vehicles sold in the United States in 2015. Green Bugatti Chevrolet Fiat GM GMC Mercedes-Benz Nissan RAM smart Toyota greenest greenest cars

2024 GMC Sierra EV revealed with 754 horsepower, 400 miles of range

This is the 2024 GMC Sierra EV in all its Denali Edition 1 glory. You probably knew this was coming. After all, when Chevrolet debuts a new pickup, the GMC version of said truck is typically quick to follow. That’s exactly the case here yet again as the Sierra EV follows the somewhat recent debut of the 2024 Chevy Silverado EV. Per usual, the Chevy and GMC versions of the electric truck share a lot of similarities. TheyÂ’re also different in many of the same ways weÂ’re accustomed to within the GM pickup family. The biggest differentiator is design. If the Silverado EV wasnÂ’t your cup of tea, perhaps the Sierra EV is! Just like the Silverado EV, the Sierra rides on GMÂ’s Ultium platform. ItÂ’s being offered exclusively in Crew Cab form at launch. GMC designers emphasized its upright stance and proportions as typical truck styling. However, close examination will show a lot of curved edges and a focus on aerodynamics to achieve a lower coefficient of drag. The front grille is devoid of any flashy patterns, as GMC has opted to go for the shield aesthetic. Light is heavily used to bring a flash of design to the face — the whole grille features a light-up surround. A three-bar charging status indicator can be seen on the front end, and engineers intentionally mounted the headlights lower in the front fascia than usual. For the Denali Edition 1 (the only version of the Sierra EV available at market launch), all of the exterior trim is done in glossy black, except for the areas you might step on, which are finished in a flat black. The rear features GMCÂ’s MultiPro tailgate, and just like the Silverado EV, the Sierra EV comes with the fancy MidGate. GMC calls it the “MultiPro MidGate,” but itÂ’s the same tech used here as youÂ’ll see in the Silverado EV. With the MidGate down, you get nine feet of storage between the cab and the tailgate. Storage can extend out to 11 feet if you use the MultiPro tailgateÂ’s stopper feature with the tailgate down. Also, the MidGate can be folded with a 60/40 split, so you can get that extra length and still retain some backseat passenger room. All of the powertrain and battery tech is similar to the Silverado EV. That means you get a pair of electric motors for all-wheel drive capability with a combined output of 754 horsepower and 785 pound-feet of torque. YouÂ’ll need to be in “Max Power Mode” (we know, much less exciting than WTF mode in the Hummer EV) to realize all that power.