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Cadillac's de Nysschen takes aim at Porsche 911, Cayenne

Johan de Nysschen has big plans for Cadillac. He's moved the brand from Detroit to New York, revamped its model nomenclature, and planning a raft of new models for the near future – including a $250,000 luxury sedan to take on the likes of Rolls-Royce and Bentley. But the veteran executive of luxury automakers has some more performance-oriented machinery in mind, too. Speaking with Car and Driver at the Los Angeles Auto Show last week, de Nysschen suggested Cadillac could be ready to launch a flagship sports car sometime in the next decade. The halo model would take aim at the Porsche 911 and do for Cadillac what Audi did with the R8, Mercedes is doing with the AMG GT and Acura once did (and is aiming to do again) with the NSX. Just what form it would take remains a big unknown, but de Nysschen indicated that the brand would need to be built up further before the sports car would be launched, lest it emerge too detached from Cadillac's image. The last time Cadillac delved into that territory was with the Corvette-based XLR, of which it sold only 15,000 or so examples – far below initial targets. The 911 rival isn't the only performance model de Nysschen has in mind, however. He plans to further expand the V series into a more substantial sub-brand to include a crossover to take on the likes of the Porsche Cayenne Turbo, BMW X5 M and all those many AMG-tuned Mercedes utilities. The idea of an entry-level model to slot in below the ATS was mooted as well. A range of diesel engines are slated to help Cadillac break into overseas markets in similar fashion to how Maserati has expanded its market reach with oil-burning versions of the Ghibli and Quattroporte. And we wouldn't be surprised to see Cadillac get in on a new flagship SUV being launched by Opel in Europe, either.

GM patent reveals new two-stage turbocharger

Modern turbochargers may be some of the best ever made, but performance is something that engineers are always trying to improve. According to GM Inside News, General Motors (GM) is hoping to alleviate some of the negative aspects of a two-stage turbocharger setup with a newly-patented design. The patent, that was filed on May 19, 2016, reveals a clever bypass system that allows the engine, a four-cylinder unit, to optimize both the low-pressure and high-pressure inlets for its respective functions. According to the filing, a conventional two-stage turbocharger setup is engineered to allow both turbines to operate simultaneously at low and mid engine speeds. At high engine speeds, only the low-pressure turbine works. The setup can't isolate either the low or high pressure side, which can impair low-end performance. GM's new two-stage turbocharger setup looks to eliminate this by linking the high-pressure turbo to the exhaust manifold through the high-pressure inlet duct. The low-pressure turbo is attached to the high-pressure turbo by a low-pressure inlet duct, which is linked to a connecting channel. A single actuator that is housed in the exhaust manifold creates a bypass that can opens the high-pressure inlet or close the connecting channel. Depending on what the engine load and speed is, the ECU guides the actuator—a single rotating spindle with discs corresponding to flanges on the high and low pressure sides—to isolate one of the two turbos. Isolating the turbos allow the respective inlets to be engineered for the best possible fluid dynamic performance. The setup should increase performance and decrease lag. There's no word on what car this setup will make an appearance on, but it will most likely be used in premium vehicles before trickling down to the rest of GM's vehicles. Related Video: News Source: GM Inside News, AutoGuide via GM Authority Cadillac Chevrolet GM Technology Sedan turbo patent engine turbocharging

GM recalling 117,000 sedans, crossovers, SUVs, pickups and vans

General Motors has issued a stop-sale to dealers and has notified the National Highway Transportation Safety Administration of its intention to recall 117,000 vehicles in the United States, Canada and Mexico. Of those vehicles, only 4,500 are at dealerships.
The affected vehicles include the Cadillac CTS and Chevrolet Impala sedans, fullsize SUVs (Cadillac Escalade, Chevy Tahoe and Suburban and GMC Yukon and Yukon XL), Lambda-platform crossovers (Chevy Traverse, Buick Enclave and GMC Acadia), heavy-duty pickups (Chevy Silverado HD and GMC Sierra HD) and fullsize vans (Chevy Express and GMC Savana). The sedans and body-on-frame SUVs include model years 2013 and 2014, while the CUVs, heavy-duty pickups and vans are limited to MY2014.
GM confirmed the recall to Autoblog via an emailed statement (which we've included below). According to the statement, the issue at hand in what is the company's 69th recall of 2014 covers the chassis-control module. Automotive News is reporting that a problem in the chassis-control system could cause a short in the module, which could cause the engine to stall or fail to start. The fault could also affect the trailer-brake control, provided it's equipped.