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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 unveiling 2021 Yukon, Yukon XL on January 14

UPDATE: We received a reply back from a representative at GMC confirming that the new Yukon will be revealed on January 14. The text has been updated to reflect this. General Motors is renewing its body-on-frame SUVs, and GMC's Yukon is next in line to receive a full makeover. It's scheduled to break cover on January 14 alongside the long-wheelbase Yukon XL. It's reasonable to assume we would have gotten our first glimpse at the next Yukon during the 2020 Detroit Auto Show had the event not moved to June. The new date is too close to the model's on-sale date, so GMC will unveil it during a standalone event held in Vail, Colorado, according to GM Authority. We reached out to GMC, and a representative confirmed that is indeed the reveal date for the full-size SUV. Spy shots suggest stylists took GMC's two biggest SUVs in a sharper, bolder direction. Both models share the same front end, which borrows styling cues like C-shaped headlights from the Sierra pickup. Brand-specific rear lights help the Yukon models stand out from their Chevrolet-badged siblings, the Tahoe and the Suburban, which hasn't always been the case. The standard Yukon and the Yukon XL will each grow in size, though there's no indication GMC's naming structure will change to reflect that; Yukon XXL admittedly doesn't have much of a ring to it. While we haven't seen the interior yet, we expect it's getting a generous serving of technology, including a new, touchscreen-based infotainment system. The larger exterior dimensions will clear up more space for people and gear, so average-sized adults will be able to fit in the third-row seats. The range-topping Denali variants of both models will return to satisfy those who crave sumptuousness. The sheet metal will hide much of the same hardware found under the Tahoe/Suburban duo, including an independent rear suspension added in the name of comfort and handling. Powertrain specifications should carry over, too, meaning the entry-level engine will be a 5.3-liter V8 rated at 355 horsepower and 383 pound-feet of torque. The list of options will include a 6.2-liter V8 with 420 horsepower on tap, and we're betting the straight-six turbodiesel available on the Bowtie-badged SUVs will also be offered at an extra cost. Rear-wheel drive and a 10-speed automatic transmission will come standard, and buyers will be able to pay extra for four-wheel drive. The next GMC Yukon and Yukon XL will go on sale halfway through 2020 as 2021 models.

2021 GMC Yukon will pull a 180 thanks to a Hurricane Turn feature

GMC isn't a hip, young startup, but its engineers are out to prove it's possible to teach an old dog new tricks. The next-generation Yukon will offer adventurers seeking a quick turn-around a "Hurricane Turn" feature that functions a lot like Rivian's Tank Turn technology. The two systems use different hardware to perform a similar action. We didn't hear anything about the Hurricane Turn feature during the Yukon's unveiling because GMC planned to keep it under wraps until later, but an eagle-eyed report at Motor Trend uncovered it and quizzed the firm. It's real, and it's engaged when the driver switches the stability control system off, energetically turns the steering wheel in either direction, and mashes the accelerator pedal to the floor. The Yukon needs to be on a loose surface, too. If you're turning right, the on-board computer applies braking power to the passenger-side wheels to prevent them from spinning, while the engine continues to turn the driver-side wheels to rotate the Yukon on its own axis. The exact opposite happens if you're turning left. It's clever and relatively simple; there's no extra hardware required to enable the feature, though it shows the next Yukon is far more advanced than its predecessor. It goes without saying that only four-wheel drive models will receive the Hurricane Turn feature. There's no word yet on whether it will be compatible with all three engine options, or if it will be limited to a certain trim level. GMC will publish additional details about the system, and hopefully a video of it in action, in the coming months. Rivian, on the other hand, leveraged its four-motor electric powertrain to teach the R1T (and presumably the R1S) how to pull a 180. The right wheels turn in the opposite directions as the left wheels – hence the name Tank Turn – to spin the truck around like a CD in a Walkman. Its system doesn't use the brakes. The 2021 Yukon is due in showrooms in the summer of 2020, and Amazon-funded Rivian won't start making the R1S until the end of 2020 at the earliest, so GMC will beat its younger rival to the punch. What remains to be seen is how often motorists use either function. We're betting not very once the initial novelty wears off. Related Video: