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Fullsize GM SUVs have a problem that's making owners sick

Some fullsize SUV owners are getting sick, thanks to a buffeting and vibration problem in 2015 model year examples of the Chevy Tahoe and Suburban, Cadillac Escalade, and GMC Yukon. According to owners' complaints to the National Highway Traffic Safety Administration, the issue can vary from an annoying vibration inside the cabin to an experience so severe that it leads to dizziness and headaches. General Motors is aware of the complaints, but the fix isn't so simple. According to spokesperson Tom Wilkinson to Autoblog, the company "has been tracking this issue for a while." The problem has a fairly low incidence rate, but when it does occur the issue can be "uncomfortable and annoying for owners." There's no precise cause for the issue, Wilkinson claims, and in some cases, simply balancing the tires or changing the door seals can make it go away. However, not all of the fixes are so simple. AutoGuide dug deep into the problem and discovered a GM preliminary information bulletin that advised dealers to remove the headliner and to check the roof's bonds to the bows that go across the vehicle. However, that document included a note that the solution might not entirely eliminate things. According to AutoGuide, adding Dynamat insulation to the roof sometimes helped the problem. A GM spokesperson also told AutoGuide the company fixed the problem at the end of the 2015 model year, and didn't go into any more detail. This roof issue seems linked to some of the worst droning in these SUVs. According to one complaint from a 2015 Suburban owner to NHTSA: "Roof will not remain attached to the roof bows. This causes the buffeting similar to a window being down when all are up. The results span from annoying to painful." A 2015 Yukon owner claims to have another alleged cause for the problem in a NHTSA complaint from February 2015. This person brought their SUV to the dealer seven times over the course of four weeks for vibrations. The dealer replaced the driveshaft, suspension components, and more, but nothing worked. According to an engineer to the service adviser: "In an effort to prevent roll overs, they designed the frame and body mounts too stiff. There are 40 engineers working on issues, they have no solutions that work across the board." Wilkinson told Autoblog that GM is working with customers on an individual basis to rectify things. Since these are newer vehicles, dealers should also fix the problem under warranty.

Detroit Three's lucrative pickup war intensifies as Ram makes big gains

DETROIT — The battle for profits from sales of large pickup trucks is intensifying among the Detroit Three automakers as sales of small cars in the United States shrivel. For decades Ford has had the single best-selling truck brand in its F-Series trucks. General Motors' Chevrolet brand was a solid No. 2, and Fiat Chrysler Automobiles' Ram was a distant third. Now, that hierarchy may be in flux. Sales figures for December and the fourth quarter released on Thursday show Ram tied with GM's Chevy for the No. 2 spot, as sales of the redesigned Ram pickup surged, fueled in part by demand for an optional 12-inch (30.48 cm) dashboard screen. Chevy not long ago held second place to Ford by a wide margin. GM executives said on Thursday they are bullish on their new GMC and Chevy trucks for 2019.Related: How the Detroit Three's pickups compare on paper 2019 Ram 1500 Laramie review 2019 Chevy Silverado 2.7L four-cylinder review 2019 Ford F-150 2.7L EcoBoost review "There's no doubt this segment (pickup trucks) is one of the epicenters of the auto wars," said Sandor Piszar, director of marketing for Chevrolet at GM. "It's been that way forever, and we wouldn't have it any other way." On Wall Street, investors give electric car leader Tesla a higher valuation than any of the Detroit automakers. But in the nation's heartland, big pickups remain far more popular and profitable than any electric car — and most other consumer vehicles of any kind. Large pickups generate at least $17,000 a vehicle in pretax profit for GM, the company has indicated in disclosures to investors. By contrast, many Detroit Three sedans are so unprofitable, their manufacturers have decided not to build them anymore. 'Hotly contested' Sustaining sales and pricing in the large-pickup segment will be critical in a year when most forecasters expect overall U.S. car and light truck sales to fall. Ford's U.S. sales chief, Mark LaNeve, on Thursday called the F Series "the backbone of our franchise" during a conference call, and added the "segment will continue to be strong, but hotly contested" in 2019. Automakers are banking on pickup truck sales to stay strong even if U.S. interest rates continue to rise. Rising interest rates translate into higher monthly car payments and are expected to deter some buyers in 2019. GM has said 27 percent of Chevrolet and GMC trucks — which can haul trailers by day and substitute for a luxury sedan by night — sell for more than $55,000.

Watch this time-lapse build of the Chevy SS for NASCAR

There's only about a week left until we get our first look at the production version of the 2014 Chevrolet SS sedan, but Chevrolet NASCAR teams have been looking at the race version of the car all winter. Autoweek has posted a really neat time-lapse video showing just a portion of what it takes to build one of NASCAR's new Gen6 stock cars.
Though the video is quite brief, it does show almost the entire build process starting with just the car's nose, and it gives us a good look at how integral the template is to the final product. As a bonus, Hendrick Motorsports also provided some videos showing two of its teams performing pit stop tests over the winter. The second video shows some of the more detailed aspects of the racecar's rear end, including the stock-looking trunk cutout and a newly mandated rear bumper extension that will be used on super speedways like Daytona and Talladega.
To see what Team Chevy has been up to all off-season, check out all three videos posted after the jump.