1969 Cadillac Deville Base Hardtop 2-door 7.7l on 2040-cars

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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.

A few signs that Cadillac's revival is taking hold

Only a flatworm would not have predicted the Cadillac ATS would help increase sales for America's erstwhile luxury brand of record; however, even the best automotive oracles didn't realize by how much: The ATS fueled a 49-percent increase of the brand's year-on-year sales in March, the sixth straight month of growth for Cadillac. The momentum helped push General Motors to post a 6.4-increase in sales in March versus 2012, leading its domestic competitors.
Dealership salesmen are among the first to register the shift occurring at Cadillac. A Texas dealer related an incident in which he helped a mother affix a baby seat in a car for a test drive, explaining that as opposed to the older buyers that are still a Cadillac mainstay he's getting "a pretty diverse group that's coming through the door now" who are "younger and better educated." Aided by incentives on the ATS, Cadillac's sales are up 38 percent so far this year, overtaking Acura as the fourth best selling luxury brand, and GM stock is benefiting with incremental gains because of it. Based on early response, the new 2014 Cadillac CTS should keep things going in the same direction.
The trend at the Wreath and Crest is part of a larger sales trend happening among domestics - with other models like the Dodge Dart and Ford Fusion doing well - and overall US car sales. Head over to Bloomberg for the big picture and role the ATS plays in it.

GM recalling 2013 Buick LaCrosse, Cadillac SRX over transmission software

The National Highway Traffic Safety Administration has issued recalls for the 2013 Buick LaCrosse and 2013 Cadillac SRX due to a problem with the software for the transmission controller. On about 27,000 SRX and LaCrosse models, the transmission could accidentally be shifted to Sport mode, which would reduce the amount of engine braking drivers experience.
NHTSA says this could increase the risk of a crash, but, fortunately, the required fix is simply an update to the software.
While we're on the subject of General Motors vehicle recalls, a small number (48) of compressed natural gas versions of the 2011 Chevrolet Express are also being recalled for a potential risk of fire or explosion. Yikes. Both official recall notices are posted below.