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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.

Diesel engine will be a no-cost option on 2021 Cadillac Escalade

Pricing for the redesigned 2021 Cadillac Escalade was revealed yesterday, with the various trim levels ranging from $77,490 to $101,290 including $1,295 destination. And while we also learned that all-wheel drive will be a $3,000 option, what's surprising is that the optional 3.0-liter inline-six diesel engine will cost $0, this according to official pricing info released by Cadillac. The diesel is one of two engine choices for the new 2021 Escalade, the other being a 6.2-liter V8. The engine also is coming to the 2021 Chevrolet and GMC full-size SUVs, but it's not yet known what the upcharge will be there, if any. Already, the 3.0-liter I6 diesel is offered in the Chevy Silverado and GMC Sierra 1500 pickups, where it is currently a $2,500 option over the 6.2-liter V8. The Duramax inline-six turbodiesel is an aluminum-block design with dual overhead camshafts and a single, variable-geometry turbocharger. Cadillac quotes preliminary outputs of 277 horsepower and 460 lb-ft of torque. The 6.2-liter V8, meanwhile, musters 420 horses and the same torque output. The primary draw for the diesel is expected to be fuel economy. EPA estimates for the diesel engine in the Escalade (and in the GMC and Chevrolet full-size utes) have not yet been released. But in the pickup trucks, the engine returns 23 city/33 highway miles per gallon with rear-wheel drive and 23/29 mpg with four-wheel drive. The 2021 Cadillac Escalade had been scheduled to reach dealerships this summer, but it's not known whether that date might slip due to the current shutdown at GM's assembly plants. Related Video:

Cadillac CT6 Plug-in Hybrid is dead for 2019

Plug-in hybrids seem to have it hard at Cadillac. First there was the ELR flop, and now Cadillac is killing off the CT6 Plug-in Hybrid. The news of the hybrid's demise was first broken by GM Authority, and we received a statement from Cadillac confirming that it would be discontinued. With it disappearing for the 2019 model year, the CT6 Plug-in was only around for two model years, the same as the ELR. The Cadillac representative we contacted didn't say exactly why the CT6 Plug-in is being discontinued. All that was mentioned was that focus for the new model year would be on the refresh and the CT6-V. We would guess the hybrid is gone due to slow sales, but General Motors doesn't break out individual trims and powertrains in its quarterly delivery reports, so we can't say for sure. We're a bit disappointed that the CT6 hybrid is going away. We were pleased with its fuel economy and refinement when we had an opportunity to drive one, and its only real sacrifice was a smaller trunk. On the plus side, Cadillac's statement to us said that there are definitely additional electric vehicles coming to the brand, noting that some of the 20 promised electric vehicles from GM by 2023 will be Cadillacs. Related Video: Featured Gallery 2017 Cadillac CT6 Plug-in Hybrid View 15 Photos Image Credit: Cadillac Cadillac Hybrid Luxury Sedan cadillac ct6 cadillac ct6 hybrid