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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.

2013 Cadillac ATS 3.6 AWD

All-Wheel, All Right
There is no escaping the luxury all-wheel drive empire Audi has built for itself over the past 15 years. While nearly every high-end marque has at least one offering with power at all four corners, the hardware can't help but play second fiddle to Ingolstadt's Quattro kingdom. Leather-lined all-wheel drive is simply Audi the way minimum wage is an English degree. But General Motors seems hell-bent on raiding as many established fiefdoms as possible with the 2013 Cadillac ATS. Engineers and designers made no secret of the fact that the baby Cadillac was penned specifically to take on the BMW 3 Series, but Audi should be no less concerned about the newest luxury prince from Detroit.
GM has been stuffing all-wheel drive systems under their vehicles for years, but the effort hasn't come without nasty side effects. Unfortunate understeer, extra ride height, smallish wheels and porky curb weight meant opting for all-wheel drive was like signing your driving pleasure's death warrant. Would you like polished brass or brushed nickel hardware for your right foot's coffin, sir?

Cadillac CT6 refresh has hints of Escala

Almost a year after Cadillac showed its stunning Escala concept at Pebble Beach, we're finally seeing some of that car's influence on production cars. These spy shots reveal that the CT6 will undergo a mild refresh, and despite the camouflage, we can make out details that show it will have looks more in line with the concept. One of the defining characteristics of the Escala were narrow, horizontal headlights, while the current CT6 has long, vertical lamps that go up the tops of the fenders. This prototype seems to split the difference. The bases of the lights terminate higher up on the fascia, emulating the Escala, but still travel up the fenders. It also appears that the LED accent lights remain, but it's possible they've been separated from the main lamps to become more like the concept. The grille has also been revised. It's hard to make out the exact shape, but the insert is the same type of mesh as the Escala's, with little highlights that look like miniature Cadillac crests. The full-size, full-color crest also appears to sit higher in the grille, which is another nod toward the concept. The lower grille in the front bumper also looks larger and more angular. That doesn't really lean toward either model, but should give the car an edgier look. The rest of the car looks generally the same as the current model. Even the tail shows little indication of changes. It's possible that the rear taillights could have an Escala-like horizontal section at the top of the trunk lid, but there's nothing visible on this prototype that would confirm that change either way. Since this is a relatively mild refresh, we would expect to see it fully revealed early next year. Related Video: