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2021 Chevy Silverado, GMC Sierra fuel economy to go down due to global chip shortage

Production of the 2021 Chevy Silverado and 2021 GMC Sierra is continuing, but the global semiconductor chip shortage is resulting in a mid-year change. Or rather, an omission.  Basically, the availability of cylinder deactivation for the 5.3-liter V8 will be significantly reduced, resulting in a reduction of 1 mpg combined for affected models. This applies whether that engine has the six- or eight-speed automatic, as well as to both the regular Active Fuel Management and the more advanced Dynamic Fuel Management cylinder deactivation systems. DFM does remain with the pairing of 5.3-liter V8 and 10-speed automatic that comes standard on the LT Trail Boss and High Country. "Due to the micro controller shortage, the components that control AFM/DFM in the engine control module (ECM) have been removed," GM spokesperson Michelle Malcho told Autoblog. She also indicated that the engines will still have the AFM/DFM hardware in place, but that GM will not allow activation of the systems in the future with an ECM change.  Malcho also confirmed to Autoblog that the Silverado and Sierra's other engines will continue to have AFM and DFM, including the 2.7-liter turbo inline-four, 4.3-liter V6 and 6.2-liter V8. In an earlier statement to Reuters, she declined to say the volume of vehicles affected. "By taking this measure, we are better able to meet the strong customer and dealer demand for our full-size trucks as the industry continues to rebound and strengthen," Malcho wrote Reuters in an email. The change runs through the 2021 model year, she said. Malcho told Reuters it would not have a major impact on the Detroit automaker's U.S. corporate average fuel economy (CAFE) numbers. "We routinely monitor our fleet for compliance in the U.S. and Canada, and we balance our portfolio in a way that enables us to manage unforeseeable circumstances like this without compromising our overall (greenhouse gas) and fuel economy compliance," she said. GM's fleetwide fuel economy in the 2018 model year was 22.5 miles per gallon and was projected to rise to 22.8 mpg for 2019, according to a report by the Environmental Protection Agency. To meet federal CAFE requirements, automakers like GM often use credits from either earlier years where they faced less stringent rules and performed better than the requirements or buy credits from other automakers. GM said last month the chip shortage could shave up to $2 billion from this year's earnings.

Disabled man realizes dream of driving with converted pickup truck

A man with a devastating illness is mobile once again thanks to a heavily modified pick up truck. He hopes he can help others in his situation gain the freedom of mobility they need to lead a normal life. Chris Sauerbaum has a physical disability resulting from chronic inflammatory polyneuropathy, a form of muscular dystrophy where the sufferer's immune system attacks their nerves. Sauerbaum lost both of his legs and is bound to a wheelchair. After 11 years of trying, he finally has a vehicle that he can drive. "You might as well be driving a Lamborghini," Sauerbaum told the York Dispatch as the driver side door extended to a lift to accommodate Sauerbaum's wheelchair. "Everyone comes up and talks to you. You come out looking like a Transformer." It wasn't easy getting transportation that fit his needs. First he bought a Chrysler PT Cruiser, which wasn't large enough to handle the equipment needed to convert the car for a legless driver. In 2013, Sauerbaum and his wife Heather Sloat appealed to local businesses and friends for donations. They raised $10,000 and were able to put a downpayment on a GMC Sierra. The truck then underwent $91,000 worth of upgrades. It was completely outfitted for Sauerbaum, with a large lift to bring his wheel chair up to the driver's seat and joysticks doing the work of peddles and the steering wheel. New York's Office of Vocational Rehabilitation paid for the conversion. "Think of it as a big remote controlled car. An 8,000 pound R/C car," Sauerbaum told the Dispatch. After a week and a half of learning the controls, Sauerbaum was able to drive with confidence again. He will no long need to rely on his wife to get him two and from work, an 80-mile trip each day. Sauerbaum and Sloat hope to start a nonprofit called Drive for Independence that will assist other wheelchair-bound people with the costs of getting a converted vehicle that suits their needs. "It's just one piece of the puzzle to get people to work," Sloat told the Dispatch. Related Video: Weird Car News GMC Driving Ownership Truck Videos disabled ms

Autoblog Garage Video: 2023 GMC Sierra AT4X is a rugged and refined truck

In this episode of Autoblog Garage, we take a tour of the 2023 GMC Sierra 1500 AT4X. This big beast of a truck isn't just a bruiser, with its 6.2-liter V8 and 33-inch mud-terrain tires. It's got a soft side — inside. After the Sierra's refresh for 2022, it gets better interiors to help differentiate it from its Chevy Silverado cousin, and the AT4X's cabin is about as nice as the exterior is tough. Despite its size and off-road intentions, the AT4X still makes for a comfortable daily driver, especially in the middle of a Michigan ice storm. Join us as we take a walk around the AT4X, from its rugged exterior and trick tailgate to its cozy, tech-filled interior and potent powertrain. Get a close look at its features, and learn more about details from specs to pricing in the video above. Come back on Wednesdays for more videos from the Autoblog Garage. Disclaimer: Autoblog accepts vehicle loans from auto manufacturers with a tank of gas and sometimes insurance for the purpose of evaluation and editorial content. Like most of the auto news industry, we also sometimes accept travel, lodging and event access for vehicle drive and news coverage opportunities. Our opinions and criticism remain our own — we do not accept sponsored editorial.