2004 Cadillac Escalade Base Sport Utility 4-door 6.0l on 2040-cars

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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

Cadillac recalls 17,500 SRX CUVs in Canada

When reporting on recalls, Autoblog generally tries to focus on the US market. However, a recent campaign in Canada seems important enough to be worth mentioning because it could eventually affect American drivers. General Motors is repairing 17,481 Canadian examples of the Cadillac SRX from the 2010-2015 model years because of the possibility of a loose nut in the rear suspension. For the moment, the automaker hasn't yet announced whether the CUV in the US would require a similar campaign.
The notice was dated September 18, 2014, on the website for Transport Canada, similar to the National Highway Traffic Safety Administration in the US. It says, "the rear suspension toe link jam nuts" might not have been sufficiency tightened, which could allow a rear wheel to turn "inboard or outboard" while driving. If this happens, it could cause a sudden change in handling. Canadian Cadillac dealers are inspecting the parts and replacing the toe link if necessary.
This campaign isn't listed on the GM's running recall tally from September, which includes exported models, but it does list four other campaigns for the SRX this year - three in this range of years and one for the 2004-2006 model. Autoblog reached out to the company to ask about the possibility of this recall expanding to the US and were told "We have not publicly announced US recalls" for the issues affecting the SRX. The New York Times was given a similar quote. Scroll down to read the notice from Transport Canada.

Cadillac XT5 confirmed for 2016 as next-gen SRX

Cadillac's entire lineup of 2016 models gets a major infotainment upgrade this summer with improvements to CUE and integration with Apple CarPlay and Android Auto. There's one major exception for now, though. The SRX retains the old system until its all-new generation, called the XT5, debuts early in the 2016 calendar year. "When we transition into all new product lines, we will evolve the naming convention to suit the new classification we have announced. So SRX becomes XT5 next year," company spokesman David Caldwell said in an email to Autoblog. Earlier spy shots and rumors suggest the XT5 might be offered with a turbocharged four-cylinder and naturally aspirated six-cylinder engines, plus a nine-speed automatic transmission. For the rest of Cadillac's models, CarPlay arrives with the launch of the 2016 vehicles, and Android Auto joins later. Using either of them requires a connection via USB, and they add a new projection icon on the CUE screen. Once activated, both systems integrate with driver's phone and incorporate features like navigation, music, and contacts. They can also accept voice commands. Even for those that don't want to hook up a smartphone, CUE should work better thanks to a more powerful processor. Start-up times for the infotainment system are expected to be faster, and Cadillac claims that it's also more responsive for voice recognition, navigation searches, and media. The navigation interface is simplified, as well. The Escalade, CTS, and XTS can now be ordered with a 360-degree camera system to display on the screen. Cadillac Enhances Phone Integration for 2016 Models with Apple CarPlay, CUE Upgrades APPLE CARPLAY AVAILABLE AT LAUNCH; ANDROID AUTO COMING LATER IN MODEL YEAR 2015-06-09 NEW YORK – Cadillac's 2016 model year products will feature enhanced connectivity and control, including the addition of Apple CarPlay and Android Auto, the predominant new systems for in-car phone integration. These additions are part of a broader enhancement of CUE, Cadillac's user experience, with new features and a faster, streamlined operation. Apple CarPlay will debut in 2016 Cadillac models featuring CUE's 8-in multi-touch screen except the SRX Crossover, a model that will move to an all-new generation in early 2016. Android Auto is expected to be phased into 2016 production at a later date. The 2016 model year will begin this summer.