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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.

GMC Sierra AT4X reportedly on the way, nameplate could be GMC's ZR2

In 2016, GM filed an application with Mexico's Institute of Industrial Property to reserve the name AT4X, and in 2019, the automaker made the same request to the U.S. Patent and Trademark Office. Seeing that GMC's current AT4 trim replaces the former All Terrain trim used on the last-gen Sierra pickup, there have been suspicions ever since those trademark filings that GM would use the AT4X name to replace GMC's former All Terrain X trim. GM Authority reports that this is precisely what's going to happen, citing "sources familiar with the matter." The outlet even gleaned an equipment group number: 4SG for AT4X, whereas AT4 is equipment group 4SB.  The surmise is that GMC is again developing its versions of Chevrolet's dirt-clobbering pickups that wear the ZR2 name. Spy shooters caught the GMC Canyon earlier this month trotting around on Multimatic's DSSV dampers and a set of 33-inch tires like its Colorado ZR2 sibling. The Canyon already offers an AT4 trim, it's thought this beefier setup will roll into the lineup as an AT4X.  Stepping up to the half-ton league, at the end of last month Chevy released a teaser for the Silverado ZR2, which had been caught in prototype guise (pictured at top) around Detroit on at least two occasions. We've mused that the production Silverado ZR2 could take some hardcore off-roader cues from the factory-upgraded Silverado ZR2 race truck like a lifted stance, long-travel front suspension, four-leaf springs instead of three-leaf, electronic locking front and rear differentials, and a wider track. One of the production prototypes was caught on 33-inch tires, but we wouldn't be shocked to see 35-inchers on the spec sheet. That size would match the race truck and the rubber fitted to the cross-town rivals Ford Raptor and Ram 1500 TRX. A GMC Sierra AT4X would be the plusher, pricier, chrome-ier version of the ZR2. The aforementioned Multimatic shocks could also be on the docket. We'd expect the GMC Sierra AT4X to bow with the heavily updated 2022 pickup, whenever that arrives. Events around the world of late delayed the pickup, its launch now thought to happen late next year or in early 2023. Related Video:  

Black Friday could power record November sales

Black Friday allows some shoppers to line up in the wee hours for doorbuster deals on laptops and TVs, but the day after Thanksgiving could mean huge profits for automakers this year, too. Multiple industry analysts predict record growth for the industry for November, and the upcoming incentives could help those numbers. TrueCar predicts that Black Friday incentives could provide a major boost, and it estimates a November sales jump of 3.9 percent from last year to a record for the month at over 1.35 million vehicles. As examples of potential deals, Chevrolet, Buick, and GMC plan to offer up to 20 percent off some models, and FCA US has no-interest financing for up to 75 months from its brands. "Consumers are excited about Black Friday promotions and these month-long events appear to be resonating with car buyers." Eric Lyman, TrueCar's vice president of industry insights, said in the report. Black Friday only recently became a big day for auto sales, according to an analysis from Edmunds. Last year, Thanksgiving weekend posted double the sales as any other weekend in the month. The company predicts a sales volume of over 1.33 million vehicles for November. If that happens, it would be the beat the previous record of 1.32 million sales for the same month in 2001. Some forecasts temper the gains for November but only slightly. Kelley Blue Book predicts flat year-over-year sales at 1.3 million vehicles, but that's largely because there are two fewer sales days in 2015 versus in 2014. "Black Friday deals on vehicles have grown in popularity in recent years, and should be a big contributor to this month's sales results," said analyst Tim Fleming in the study. The combined research from J.D. Power and LMC Automotive have the lowest November prediction among this group at just over 1.279 million sales for the month versus 1.299 million in 2014. However, once the researchers adjust the figures for the two fewer selling days, 2015 could actually be seven percent higher than last year. TrueCar Finds New Auto Sales in November to Reach Monthly Record Black Friday promotions bolster sales gains; industrywide incentives up 6% from last year November 24, 2015 12:11 PM Eastern Standard Time SANTA MONICA, Calif.--(BUSINESS WIRE)--TrueCar, Inc. (NASDAQ: TRUE) projects total new vehicle sales, including fleet deliveries, will reach 1,352,500 units in November, a 3.9 percent increase from a year ago and the highest ever for the month.