2007 Cadillac Cts Base Sedan 4-door 3.6l on 2040-cars

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Reuss says Cadillac CT6-based Buick could happen

Could the upcoming Cadillac CT6 and its Omega platform spawn a Buick variant? According to General Motors' product chief Mark Reuss, it could potentially be in the cards, but "not yet." "We're working on that," Reuss told Automotive News at the 2015 New York Auto Show. While there hasn't been a large, rear-drive Buick on dealerships since the Roadmaster in 1996, the company gave a big hint that it could head in that direction with the Avenir Concept, shown earlier this year at the Detroit Auto Show. As Automotive News explains, a rear-drive Omega-platform Buick could be a real hit in China, where consumers buy 13 Buicks for every one Cadillac. That move would be a big help to GM's bottom line, too, as it'd significantly increase the Omega platform's economy of scale. If a large Buick based on the CT6 were to head to China, though, it likely wouldn't be a simple case of badge engineering (thank God). Reuss hinted to Automotive News that while the mixed-material construction of the CT6 platform "is very flexible," doing an "identical version of that platform or not is a different conversation." What are your thoughts? Should Buick adopt the Omega platform for an Avenir-based sedan? Should that vehicle be sold here in the US, or should it be a China-only offering? Have your say in Comments. Related Video:

Cadillac CT5 spied with quad exhaust, could signal a hotter version is coming

The 2020 Cadillac CT5 just broke cover at the NY Auto Show this year, but one of our spy shooters caught one decked out in camouflage looking a bit different than the versions we've already seen. Instead of the dual exhaust on both the turbocharged four-cylinder and twin-turbo V6, this one has a quad exhaust outlet. We'll note that the placement of the quad outlets is one and the same with the two larger outlets on the CT5 already revealed. Also, the rest of the car looks relatively ho-hum. It has the wheels from the CT5 Sport trim, and the front end appears to most closely represent the Luxury trim. Some of the coverings appear to be opened up on that front end, possibly in an attempt to increase airflow. The most obvious change of them all is the quad exhaust, though, which brings us back to a conversation we had with a Cadillac representative at the car's initial media launch. As we were standing around gawking at the new CT5 in Sport trim, a brand representative told us all the "Sport" models (four-cylinders and V6s) would be getting quad exhaust, while the "Luxury" trims would get dual exhaust. We pointed at the CT5 Sport right in front of us and noted that it just had a dual exhaust setup. This ended up causing more confusion, as the Cadillac representative was adamant that they had seen the CT5 Sport with quad exhaust. When all was said and done, there wasn't exactly a clear explanation given for what was up with this mysterious CT5 model with quad exhaust, so we left it at that. We can guess, though. Perhaps the Cadillac rep had seen a Sport model with quad exhaust, but it was a future "V-Sport" variant we weren't allowed to know of yet. Cadillac hasn't revealed its future plans for the CT5 fully, but it did hint that at least one performance variant would be on the way. This camo'd up car here does not look anything like a full-on V model, but it could be the beginnings of a slightly more powerful version of the sport sedan. The 3.0-liter twin-turbo V6 makes 335 horsepower and 400 pound-feet of torque. Of course, there's always room for more power in this class, and a V-Sport model would slot in nicely to the new sedan's range. Keep in mind this all remains speculative in nature. However, our curious conversation with Cadillac combined with these spy shots signal that something could be afoot.

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.