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2018 GMC Acadia with 'Christmas Aero' modification gets in the wind tunnel

Tis the season of "Big" - big cheer, big parties, big bowls of eggnog, big decorations, and when it comes to your family hauler, big drag. Festive drivers who festoon their crossovers, minivans, and SUVs with wreaths, Rudolph noses, fuzzy antlers, and rooftop Christmas trees undo the years of work that car engineers devote to fractional gains in fuel economy. To put numbers to such fuel-guzzling madness, GMC started with a 2018 Acadia, optioned it with the Xmas Aero Package - both Standard and Plus versions - put it in Lockheed-Martin's wind tunnel. The resulting dip in fuel economy results probably won't surprise anyone who's used a roof rack - or, for that matter, their car's air conditioning. However, it might surprise you to find out which seemingly substantial decoration had no effect, and which seemingly innocuous decoration was about twice as bad as running the A/C on its Mr. Freeze setting. Check out the brief video above for the results. And consider placement of that bow carefully.

2019 GMC Sierra 1500 prototype shows off differences from Silverado

Now that the new Silverado has made its debut, we're awaiting the reveal of its mildly restyled twin, the GMC Sierra 1500. While it likely won't be that different as far as capability and major equipment are concerned, we are looking forward to seeing what design changes it will have. Based on these recent spy shots, the changes will be mild, but still enough to make it visually distinctive. One of the more obvious differences will be in the front fascia treatment. Unlike the Silverado's grille that's level with the top of the headlights, the GMC's will rise above the lights, which will also yield a slight drop on each side of the hood to meet the lights. The grille is quite tall, extending far below the headlights, too. We can make out, behind some mesh, two dips on the outer edges of the grille that give the Sierra a more menacing frown. Large foglights are also found right near where the scoops for the wheel air curtains, and the headlights are unified on the edges, rather than split on the Silverado. Along the sides, the sheet metal looks relatively unchanged. At some angles, we can make out the distinctive shoulder line from the Silverado that runs up to about the rear mirrors where it stops to make room for another crease that rises up from somewhere in the middle of the front doors to lead to the front. The wheel arches are decidedly different from the Silverado's though. While the Silverado has fairly rounded arches, the Sierra's have a rear-slanted bevel to the fronts of the arches and a rounded 90-degree corner at the rears. There isn't much we can tell about the rear except for the taillights. They're quite large, and unlike the Silverado's, there aren't any areas where the sheet metal intrudes. It also appears that the tops of the taillights extend farther forward into the bed sides than the Chevy's. Because the Sierra has almost always been a mechanical twin of the Silverado, we expect it to offer the same 5.3-liter and 6.2-liter V8s, as well as the new 3.0-liter diesel inline-6. Also, being a GMC, it will likely have a flashy, chrome-laden Denali trim level. We also will see the fully revealed model soon, as Automotive News reports the debut will be on March 1. Related Video: Featured Gallery 2019 GMC Sierra 1500 spy shots View 39 Photos News Source: Automotive News Spy Photos GMC Truck chevrolet silverado

UAW Chief Shawn Fain disrupts Detroit's labor tradition

He's known to quote the Bible and Nation of Islam civil rights leader Malcolm X. He's a social media fanatic who keeps the pay stubs of his union member grandfather in his wallet. And now, Shawn Fain is representing nearly 150,000 auto workers in one of the biggest labor strikes in decades. In taking action against all three Detroit carmakers, Fain, the head of the United Auto Workers, has remade the strategy of the union he leads, choosing a bolder, much riskier path than his predecessors after he won office by a narrow margin in a first-ever direct election earlier this year. The strike started as the clock hit midnight on Friday, and followed Fain's decision to open negotiations with Ford Motor, General Motors and Stellantis simultaneously and eschew public niceties involving choreographed handshakes that famously kicked off previous negotiating efforts. The strategy is not without risk. A weeks-long strike would hit workers who live paycheck to paycheck, while the Detroit Three automakers have billions in cash to withstand the walkout. Fain, 54, has made creative use of social media, appearances on network and cable news programs and alliances with high-profile progressive politicians such as U.S. Senator Bernie Sanders, to reframe the UAW's contract bargaining as a battle to re-set the balance of power between workers and global corporations. He has rebutted automakers' concerns about labor costs by pointing out that they have poured billions into share buybacks to benefit investors. "If they’ve got money for Wall Street they sure as hell have money for the workers making the product," he said. “We fight for the good of the entire working class and the poor." In lengthy social media talks to UAW members, Fain alternates quoting Bible verses with the use of charts and graphs to dissect wage and benefit offers from the automakers - details his predecessors kept behind closed doors during bargaining crunch time. Fain, in his unorthodox approach, ran what amounted to a public auction among the companies to push each one to top the other to avoid a costly walkout. Prior UAW presidents picked just one automaker to set a pattern for the other two. Over and over, Fain has told UAW members at the Detroit Three that they can reverse 20 years of wage and retiree benefit concessions, stop further plant closures and end a seniority-based, tiered compensation system that pays new hires as much as 44% less than veteran workers.