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Next-gen Chevy Silverado and GMC Sierra may use carbon fiber

It's been generally accepted that the next generation of full-size GM trucks will use some sort of strong, lightweight material for the beds while retaining steel for the cab. While aluminum seems like the most obvious choice, according to Automotive News, the Chevy Silverado and GMC Sierra will incorporate both aluminum and carbon fiber in their beds. The publication cites sources from within GM, though it seems the introduction of this comparatively exotic material mix is still a few years off. While carbon fiber is both stronger and lighter than steel and aluminum, it takes significantly more time and money to produce, essentially relegating the material to small-volume cars. The main benefit for trucks is the resulting reduction in weight to improve fuel economy without sacrificing the tough, rugged capabilities truck buyers expect. The Ford F-150 made the switch to aluminum for the 2015 model year and it's proved highly successful. It seemed like it was only a matter of time before the competition followed suit. Automotive News says that the next-gen trucks will launch with aluminum beds and that it will take a couple of years before we'll see any carbon fiber incorporated into the design. Even then, only look for the composite material on higher-trim models, with a trickle down to lower-spec trucks possible further in the future. In 2011, GM announced it was working with Japan-based Teijin Limited on a carbon fiber reinforced thermoplastic. There's a good chance that material's introduction will be on trucks. Related Video: News Source: Automotive News Plants/Manufacturing Rumormill Chevrolet GM GMC Truck

GM may kill 6 car models as it works with UAW to tackle sales slump

The president of the United Auto Workers union said on Thursday the union is talking with General Motors about the potential threat to plants and jobs from slumping U.S. car sales. GM's response will be more trucks and SUVs, and sources say at least six slow-selling car models may be killed off. "We are talking to (GM) right now about the products that they currently have" at underused car plants such as Hamtramck in Michigan and Lordstown in Ohio, and whether they might be replaced with newer, more popular vehicles such as crossovers, Dennis Williams told reporters. "We are tracking it (and) we are addressing it," Williams added. GM has cut shifts at several U.S. plants this year as inventories of unsold cars have ballooned. Industry analysts said more jobs could be at risk as the automaker wrestles with permanently shrinking production of small and midsized sedans. GM is reviewing whether to cancel at least six passenger cars in the U.S. market after 2020, including the Chevrolet Volt hybrid, which could be replaced in 2022 with a new gasoline-electric crossover model, Reuters has learned from people familiar with the plans. Other GM cars at risk include the Buick LaCrosse, Cadillac CT6, Cadillac XTS, Chevrolet Impala and Chevrolet Sonic, sources said. Some analysts have singled out GM's Hamtramck plant in Detroit as one of the most vulnerable because of plummeting car sales. The plant, which opened in 1985, builds four slow-selling models: Buick LaCrosse, Chevrolet Impala, Cadillac CT6 and Chevrolet Volt. In the first half, it built fewer than 35,000 cars, down 32 percent from the same period in 2016, according to suppliers familiar with GM's U.S. production schedule. The typical GM assembly plant builds 200,000-300,000 vehicles a year.COMING ATTRACTIONS: TRUCKS AND SUVS GM must "create some innovative new products" to replace slow-selling sedans "or start closing plants," said Sam Fiorani, vice president of AutoForecast Solutions. The auto maker already has begun to shift future production plans from cars to trucks, according to Morgan Stanley auto analyst John Murphy. He estimates that fewer than 10 percent of the new vehicle models that GM will introduce over the next four years will be passenger cars, with the rest divided among trucks, SUVs and crossovers. GM plans to add production of the new Cadillac XT4 crossover next year to its Malibu sedan plant in Fairfax, Kansas.

GM recalls 64k 2011-2013 Volts over carbon monoxide fears, stop sale on Trax and Encore

General Motors is recalling 50,249 Chevrolet Volts from the 2011-2013 model years in the US and an additional 13,937 exported examples because of fears over carbon monoxide buildup. According to a statement, if a Volt is accidentally left on while running on electric power, its internal combustion engine would eventually kick on to charge on the battery. If this happens in an enclosed space, then carbon monoxide can fill the area, leading to a potential exposure to the dangerous gas. According to GM, there have been two injuries reported due to this issue. To fix the problem, there's a software update to limit the time the vehicle can idle. According to Automotive News, GM is also issuing a stop sale on about 2,300 examples of the 2015 Chevrolet Trax and Buick Encore. In these compact crossovers, it's possible that the steering column assembly could touch the power steering circuit board and cause damage over time. This could potentially cause the system to stop working. Automotive News indicates that the automaker is still working with the supplier to get the necessary parts to repair this problem. General Motors is recalling 50,249 Chevrolet Volts in the U.S. from the 2011-2013 model years to implement a software update that will limit the amount of time a vehicle can be left idling in the "on" or "run" position. If a driver exits the vehicle and inadvertently leaves the vehicle "on" by failing to react to cues and warning chimes emitted by the vehicle, the vehicle's high-voltage battery will drain after a period of time and the gasoline engine will begin to run. If the gas engine runs for a long period of time within an enclosed space, such as a garage, carbon monoxide could build up. GM is aware of two injuries, both related to carbon monoxide build up. The total recall population including Canada and exports is 64,186. Related Video: