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GM's Buckle to Drive teen safety feature comes to more models for 2021

In 2014, GM announced a feature called "Belt Assurance," which would prevent a vehicle from being shifted out of park until the driver and front passenger had buckled their seatbelts. Initially launched on certain fleet vehicles in 2014, the feature rolled out as a free option on the 2015 GMC Sierra, Chevrolet Colorado, Cruze and Silverado. At the time, GM said it would push Belt Assurance to more models if customers took to it. That appears to have happened; come 2019, GM repackaged Belt Assurance as Buckle to Drive, part of the automaker's Teen Driver System that bundled tech such as geofencing and speed limit warnings to help parents keep track of their children's driving habits. In that implementation, the system only works when Teen Driver Mode is activated, locking out the shifter and muting the radio for 20 seconds or until the seatbelts are buckled, whichever comes first. The system shows a visual warning in the gauge cluster, too.  For this model year, the Teen Driver System came standard on 10 Chevy models, but Buckle to Drive was only allotted to the Colorado, Malibu and Traverse. Later this year, the 2021 Camaro will join the Chevys outfitted with the Teen Driver System and will get Buckle to Drive in addition. GM Authority reports that for the 2021 model year, Buckle to Drive will also be picked up by the Cadillac CT4 and CT5. Previously, the Cadillac ATS, CTS, Escalade and XTS came with the Teen Driver System, but three out of those four vehicles are no more, and the 2021 Escalade makes no mention of the Teen Driver System nor Buckle to Drive among its safety features. Elsewhere around the GM empire, the Buick Envision and Encore GX include the Teen Driver System, as do six GMC vehicles, but it's not clear when any will be upgraded with Buckle to Drive. The tech could help save numerous teenagers' lives. On its page of teen crash facts, the Centers for Disease Control and Prevention writes that roughly 300,000 teens between the ages of 16 and 19 ended up in emergency rooms to treat crash injuries in 2017. Furthermore, "only 58.8% of high school students always wore seat belts when riding as passengers," and, "Among young drivers aged 15-20 who died in car crashes in 2017, almost half were unrestrained at the time of the crash (when restraint use was known)." Related Video:    

GM Cadillac chief: New CT5 will replace 3 sedans; EVs coming

DETROIT - The head of General Motors' Cadillac luxury division said on Thursday the brand will shrink its lineup of sedans and expand its offerings of sport utility vehicles and hybrid and electric vehicles in response to market shifts. Expanding Cadillac's global sales is central to GM's overall profit strategy, and Cadillac has reported a 27 percent increase in worldwide sales through the first half of the year. However, in the United States, now the brand's second largest market behind China, Cadillac sales are down 1.6 percent and combined sales of the brand's four sedan models have plummeted 16.3 percent through the first half of the year. That has forced GM to order layoffs at two Michigan factories that build Cadillac cars, and raised questions about the long term future of the plants. "We have to rebalance our sedan portfolio," Johan de Nysschen told Reuters in interview, offering new details about the strategy. Cadillac will not directly replace the current XTS, CTS or ATS sedans when they end their life cycles in 2019, he said. Instead, Cadillac will use a single new car called the CT5 to appeal to consumers shopping for sedans priced between $35,000 and $45,000. New versions of the CT6 sedan will be offered to customers who want a larger car starting at $50,000. Sources had told Reuters last week that GM was considering ending production on six cars including the CT6 and XTS and models from Chevrolet and Buick. That report now appears only half-right as far as Cadillac is concerned. The new CT5 will be built at a factory near Lansing, Michigan, that currently builds the slow-selling Cadillac ATS and CTS models. A small luxury sedan to compete with the Audi A3 will be built in the same plant, de Nysschen said. Cadillac will offer more SUVs, starting with a compact model called XT4, followed by a larger SUV with three rows of seats due by 2019 to compete with vehicles such as Volvo's current XC90 model. Volvo, owned by China's Zhejiang Geely Holding Group, scored a public relations coup by announcing plans earlier this month to power all its vehicles with either hybrid or all-electric technology starting in 2019. The move challenges Tesla, which has eclipsed more established brands with tech savvy luxury buyers. Cadillac has plans "not dissimilar to what Volvo has announced," with more electrified vehicles launching in the second half of the next decade, de Nysschen said.

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