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2018 GMC Yukon Denali gets a sculpted new grille

More than half of all GMC Yukon and Yukon XL models sold wear top-level Denali trim. That's a profitable scenario for the automaker, so, perhaps above all else, GMC needs its premium Denali series of vehicles to continue to stand out in a line of trucks and SUVs at the dealership lot. Hence, chrome, and lots of it. But for 2018, GMC is blessing the behemoth Yukon Denali with an added dose of class with a new multi-dimensional grille. "The new grille, which is flanked by HID headlamps and LED Signature Lighting, advances the design legacy established with the very first Yukon Denali in 1999," said Matt Noone, director of Global GMC Exterior Design. In addition to a sophisticated new look, the grille adds customizable cooling capabilities to the Denali range. Active shutters open when additional cooling is needed, or close to reduce aerodynamic drag when the engine isn't too warm. Further increasing the efficiency of the big brutish 'ute is a new 10-speed automatic transmission. That's two extra gears over the 2017 Yukon Denali, leading to a numerically lower final drive to help save fuel at highway speeds. Inside, Mastique Ash wood trim differentiates the 2018 model from previous years. A 420-horsepower 6.2-liter V8 engine remains standard for 2018, as do blingy 20-inch wheels with 22 inchers optional. Related Video: Design/Style GMC SUV Luxury gmc yukon denali

GM confirms 2015 Silverado, Sierra to get 8-speed automatic

When viewed alongside the next Ford F-150 and the Ram 1500, there is one thing that seems to be missing from the Chevrolet Silverado and GMC Sierra. Where the F-150 will rely on turbocharging and aluminum architecture and the Ram sports an eight-speed automatic and an air suspension, the General Motors twins lack a big, calling-card feature. They're very good, very refined trucks, but one could argue that they're not terribly innovative.
And while it might not be as flashy a feature as air suspension or a lightweight skin, the Silverado and Sierra will get their own eight-speed automatic for 2015, a transmission that will be paired with the company's Ecotec3 6.2-liter V8. The new cogswapper will also find its way into the GMC Yukon Denali, but for now, there's no indication why the Cadillac Escalade, Suburban, Tahoe and standard Yukon are being left out.
According to GM, the new gearbox is about the same size and weight as the current Hydra-Matic 6L80 six-speed. By the time the new powertrain combination enters production late this year, the EPA will almost certainly have gotten around to certifying the vehicles' fuel efficiency. Until then, feel free to speculate. The current Silverado with the 6.2 and six-speed auto returns 14 miles per gallon in the city and 20 on the highway. How much do you think the eight-speed will improve those figures? Scroll down for the official press blast from General Motors, and then head into Comments.

11 vehicles from Barrett-Jackson Las Vegas worth watching

This weekend will see the world's collector car crowds descend on Las Vegas, NV for one of the biggest shows on Barrett-Jackson's popular auction circuit. There are hundreds of vehicles up for bidding, ranging from a brand-new Lamborghini Aventador to a spattering of Art Deco classics and a huge swath of classic muscle cars.
While it's virtually impossible to assemble an inarguable list of the best cars coming during the three-day, 700-plus vehicle auction, we've sifted through the listings for this year's show - it was a tough assignment, we promise - and assembled a list of what we think will be some of the most interesting lots. We'll admit, it's a bit heavy on American iron, but if you browse BJ's listings, you'll come to a similar conclusion. Still, scroll down for our list of what we think will be the most interesting vehicles at the upcoming auction.