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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.

L.A. Auto Show, Chevy Volt and the Lincoln Navigator | Autoblog Podcast #563

On the latest Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Green Editor John Snyder. First, they recap the biggest and best reveals of the 2018 Los Angeles Auto Show. Then they take a moment to say goodbye to the Chevy Volt, and to talk about their recent drives in the to-be-discontinued plug-in. Finally, they review the Lincoln Navigator, and marvel at the Black Label's stunning interior treatment.Autoblog Podcast #563 Get The Podcast iTunes – Subscribe to the Autoblog Podcast in iTunes RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown 2018 L.A. Auto Show recap 2020 Porsche 911 2020 Jeep Gladiator 2020 Lincoln Aviator 2019 Mazda3 Rivian R1T pickup and R1S SUV 2020 Hyundai Palisade 2019 Honda Passport Audi E-Tron GT Concept One last drive in the Chevrolet Volt Driving the Lincoln Navigator Feedback Email – Podcast@Autoblog.com Review the show on iTunes Related Video:

2019 Toyota Avalon vs. full-size sedans: How they compare on paper

Full-size sedans aren't exactly in great demand at the moment, and at least one of the vehicles in this comparison has been rumored to be on the endangered species list. Yet, we've just had our first drive in the 2019 Toyota Avalon, and if anything has a chance of rejuvenating the segment a bit, it's an all-new version of what has long been the segment's benchmark. To see how the new Avalon compares, we've put together the below spreadsheet featuring the Avalon's primary apples-to-apples rivals, the Buick LaCrosse and Chevy Impala. We also included the Nissan Maxima, which is comparable in price, sales and non-luxury badge, and which offers the sort of increased driver engagement promised by the new Avalon XSE and Touring trim levels. We also included the outgoing Avalon for reference as well as that car's luxury cousin, the Lexus ES, which can definitely be cross-shopped with the luxuriously trimmed Avalon Limited. You can use our Compare Cars tool to create your own comparison, such as one featuring the rear-wheel-drive Chrysler 300, Dodge Charger or even Kia Stinger. Alright, enough chit chat. On to the spreadsheet. Performance and fuel economy The GM sedans may come standard with four cylinders, including a mild hybrid system in the LaCrosse, but puh-lease. The V6 is the name of the game in this segment, with outputs now surpassing the 300-horsepower mark. The LaCrosse is the horsepower and torque champ, though it also weighs a bit more than the new 2019 Avalon, so acceleration is likely to be comparable. The Impala weighs a lot more and has only a six-speed automatic, so despite having a wee bit more power, one should expect it to be pokier (not a good sign for a car rumored to be on the chopping block). One would expect the Maxima's 300 hp and lowest curb weight to result in the quickest acceleration, but then it's also strapped to a CVT, which despite being better than ever, is still a CVT. Things get worse for Chevy when you consider the Impala's base four-cylinder gets the same 25 mpg combined as the Avalon's V6 — once again a segment best. Now, should you really prioritize fuel economy, the 2019 Toyota Avalon Hybrid really stands out with a 43 mpg rating (or 44 with the base XLE trim) that bests the outgoing Avalon Hybrid. Honestly, after driving this new Hybrid, it actually seems like it would be the best bet for most buyers. There's sufficient power, and it only costs $1,000 more than the comparable V6 version.