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2015 Chevy Silverado, GMC Sierra recalled for steering issues

DETROIT — General Motors Co is recalling more than 1 million pickup trucks and sport utility vehicles in the United States due to issues with a temporary loss of power steering, the National Highway Traffic Safety Administration said. The recall is for 2015 models. They are: the Chevy Silverado 1500, Suburban and Tahoe, GMC Sierra 1500, Yukon and Yukon XL and Cadillac Escalade. The problem may cause difficulty steering the vehicle, especially at low speeds, increasing the risk of a crash, the auto safety regulator said in a document dated Sept. 12. The document did not highlight any reports of accidents and injuries, because of the power steering issue. GM dealers will update the power steering module software, free of charge for owners of the affected vehicles. In 2014, the No.1 U.S. automaker had recalled nearly 800,000 pickup trucks worldwide because of the same problem. GM did not immediately respond to a request for comment.Related Video:

2021 Cadillac Escalade price increases take starting price to $77,490

Update: This story has been updated with official pricing from Cadillac that includes the destination charge and pricing for the long wheelbase ESV model. The modified story continues below. As the 2021 Cadillac Escalade prepares behind-the-scenes for duty in front of real-life red carpets, more information on the brand new fifth-generation SUV bubbles to the surface. GM Authority got its hands on some MSRP figures the other day, but we have the official pricing from Cadillac now. GM kept pricing of the other full-sized SUV family — the Tahoe, Suburban, and Yukon — unchanged or close to the outgoing models. Escalade intenders will be happy to know the same goes here, the 2021 example priced at $77,490 after a $1,295 destination charge is added in, only $1,000 more that the soon-to-be retired 2020 Escalade for a fancier cabin and lots of new tech inside and out. Cadillac reworked the trim walk for 2021 to its Y-trim configuration, splitting into Luxury and Sport models above the base trim. There were four options in 2020, not including all-wheel-drive versions: Base, Luxury, Premium Luxury, and Platinum. There are five for the new year: Luxury, Premium Luxury, Sport, Premium Luxury Platinum, and Sport Platinum. The switcheroo makes it hard to compare all but the bottom and top trims, but the price walk for rear-wheel-drive versions goes: Luxury: $77,490 Premium Luxury: $84,290 Sport: $86,890 Premium Luxury Platinum: $101,290 Sport Luxury Platinum: $101,290  Add $3,000 to any of those trim prices, and you'll have the corresponding long wheelbase ESV price. Four wheel drive is a similar $3,000 charge on any trim. That means the base price on the top trim Escalade ESV with four-wheel drive is $107,290. The 2021 Platinum models are $7,700 more than the 2020 Escalade Platinum. The standard engine is the 6.2-liter V8, shifting through a 10-speed transmission. And the 3.0-liter Duramax diesel is a no-cost option, so take your pick. Customers could end up waiting for the Escalade as well, depending on when every kind of manufacturing can restart in earnest to serve the Arlington, Texas, plant all the parts it needs to build the new SUV. Related Video:      

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