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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:

GMC explains why the Hummer EV SUV has only 830 horsepower

GMC's 2022 Hummer EV pickup made its debut in late 2020 with a headline-grabbing 1,000-horsepower rating. Its SUV sibling broke cover yesterday with 170 fewer horses, so GMC executives had some explaining to do. Al Oppenheiser, the EV's chief engineer, pointed out that the SUV's wheelbase is about nine inches shorter than the truck's, which is called an "SUT" in GMC-speak. It's also about 20 inches shorter overall. Size matters in the electric car world; GMC can't stuff the SUT's big battery pack in the more compact SUV, and this directly influences power. He added that it would have been possible to build a 1,000-horsepower SUV by making changes to the battery pack's layout. His team would have needed to reduce cargo capacity and get rid of the flat loading floor, which were compromises that engineers were not prepared to make. Ultimately, 830 horses should be plenty for most drivers. "Frankly, we are not sorry that it's only 830 horsepower. There aren't many internal combustion engines that can say that. Will we be able to grow horsepower in the future? We are going to push that capability, and as the technology gets to the point where our batteries are smaller and more efficient, we will improve performance with any chance we get," Oppenheiser said. It helps that the Ultium battery technology GMC uses is extremely modular. Less powerful versions of the Hummer SUV are in the cards, too. At launch in early 2023, the model will exclusively be offered with the aforementioned 830-horsepower drivetrain, which offers around 300 miles of driving range. Pricing will start at $105,595 before options are factored in. Several months later, GMC will release an EV2X variant with up to 625 horsepower, about the same amount of driving range, and an $89,995 price tag before incentives. Related video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. GMC Hummer EV reveal

GM shows off 'digital vehicle platform' enabling more in-car tech and OTA updates

It appears to have dropped the sobriquet "Global B," but General Motors' new electrical architecture has bowed in drawings and video. This is the "digital vehicle platform" GM president Mark Reuss spoke to Reuters about in 2015, saying it would move a great deal of a vehicle's computer work to the cloud and enable over-the-air updates. Reuss took the microphone for the debut, too, saying, "Our new digital vehicle platform and its eventual successors will underpin all our future innovations across a wide range of technological advancements, including EVs and expanded automated driving." The system will go into production later this year, appearing in dealerships first either on the 2020 Cadillac CT5 or the mid-engined 2020 Chevrolet Corvette. Yes, these are the same electronics cited for delaying the launch of the C8 Corvette over excessive draw, security and getting the more-than-100 computer modules to communicate seamlessly. When Car and Driver asked about that, GM replied with "No comment." Volkswagen's having the same issues with the Mk8 Golf right now, though, so GM isn't alone, and this will be the new normal among OEMs for a while. What's certifiable is that the new architecture is robust enough to handle 4.5 terabytes of data per hour, which is five times what GM's current wiring can handle. And thanks to Ethernet connections of 100 Mbps, 1 Gbs and 10 Gbs, communication within and without the vehicle happens much faster. The advances mean better screen resolutions, better battery management for hybrids and electric vehicles, the capability for over-the-air updates and "functionality upgrades throughout the lifespan of the vehicle." Cadillac's Super Cruise has already been lined up as a leading candidate for constant improvements in the driving assistance suite, a key part of GM's "vision for a world with zero crashes, zero emissions and zero congestion." And whenever GM decides to take the plunge, it will mean a 48-volt electrical system. More than 300 specialists worked on the digital platform, and security was a huge part of the task. We've already heard that GM consulted with Boeing and military contractors on how to prevent hacking. The carmaker has an internal Product Cybersecurity group that reached out to the research community, and created a "bug bounty" program to crowdsource uncovering any flaws.