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Cadillac rushing update for laggy CUE infotainment system

BMW's innovative iDrive was introduced in 2001, and a dozen years later, automakers are still learning hard lessons about what consumers want in their infotainment systems. In response to owner feedback - and a few media drubbings - about the delayed and occasionally fickle responses of its CUE (short for Cadillac User Experience) system, Cadillac has told Wired that it's going to issue an update this year.
Coming for the XTS and ATS, the new software will mean quicker haptic feedback to driver inputs on the touchscreen and the buttons, and snappier responses on screen. Down the road, Cadillac's VP of marketing says that a different mix of screen controls and hard buttons is "something you'll be seeing in the future" - the system is presently a mix of touchscreen-based controls and capacitive-touch switchgear - there are no knobs or physical pushbuttons to speak of, and the omission of both has proven to be a divisive issue among consumers and industry pundits.
Cadillac hasn't provided a date for when the CUE update will be issued, but it has indicated that the service will be performed by dealers, not sent wirelessly.

GM recalling Cadillac ATS, XTS, Chevy Impala over faulty brake lamps

General Motors has issued a recall covering 1,627 sedans over faulty brake lamps. Both the 2013 Cadillac ATS and XTS are affected by this problem, as is the 2014 Chevrolet Impala.
According to an official National Highway Traffic Safety Administration report, "the brake lamps may intermittently flash without the brakes being applied and the cruise control may disengage" on these vehicles. The report does not state that the brakes themselves are faulty, but rather that "if the brake lamps flash when the vehicle is not slowing, a following driver may not adjust vehicle speed when the vehicle is in fact braking."
This marks the first recall for the 2013 Cadillac ATS, as well as the recently introduced 2014 Chevy Impala. In late 2012, over 12,000 Cadillac XTS models were recalled due to a head restraint issue.

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