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How GM engineers are using diaper 'snow' to keep you warm

Testing how snow affects General Motors' vehicles isn't really a problem right now for the company's engineers, but in the dog days of summer the process isn't exactly easy. The only real option is for them to book time at the automaker's climatic wind tunnel. However, a flash of brilliance from an engineer allows snow to be simulated regardless of the temperature outside, and the discovery is all because of his daughter's wet diaper. The realization came to GM Thermal Systems engineer Nicholas Jahn while he was swimming with his daughter and noticed how her diaper ballooned in size in the water. He found out the substance that makes this possible is called sodium polyacrylate. When the material gets wet it grows and forms fluffy flakes that are a close imitation of snow. Best of all, the stuff can be prepared easily any time of the year, and it's reusable. The engineering team uses the material to test the effectiveness of the heating systems of GM's vehicles. They spread the sodium polyacrylate over the inlets at the base of the windshield to obstruct the airflow and then crank the heater. After some time, they can see how much is being sucked into the system and design more efficient systems in the future. See how the process works in the video above and read about the diaper discovery in GM's press release below. Diapers Change Chevy Cruze Winter Warm-up Time GM validation engineer uses diaper material "snow" to reduce frigid drives 2015-01-06 DETROIT – An item commonly found on an infant's changing table is helping General Motors' engineers simulate snow year round, ensuring heating systems in cars like the 2015 Chevrolet Cruze can quickly and efficiently warm its interior. Packed snow can prevent air from entering the inlet panel at the bottom of the windshield, obstructing the flow of air into the heating system and reducing the amount of air it can push out. This can lead to less efficient warming of the car's interior and windshield defrosting. "The last thing anyone wants to do when it's freezing cold out is scrape their windshield," said Nicholas Jahn, GM Vehicle Thermal Systems engineer. "The testing we perform on the Chevrolet Cruze with the diaper material allows us to maximize the car's heating capabilities." Ironically, Jahn stumbled upon his diaper-based testing method in the middle of summer. During a swim with his daughter, he noticed her diaper multiplied in size when it came into contact with water.

2022 Chevrolet Silverado LT Trail Boss adds 3.0-liter diesel option

Order books just opened for the 2022 Chevrolet Silverado, which, in case you hadn't heard, is almost unchanged compared to the 2021 Silverado. The overhauled Silverado and GMC Sierra that we caught in spy shots several times last year and were expected to launch this year have been delayed. Until that pickup gets here, Chevrolet and GMC will add "Limited" to the names of the Silverado and Sierra. Fleet guides for next year's truck show the official model name as Chevrolet Silverado 1500 LTD. There are a few interesting features coming next year, though, like the Multi-Flex tailgate joining the options list for Silverado HD trucks. GM Authority also reports that the 2022 Silverado LT Trail Boss adds the 3.0-liter oil-burner with 277 horsepower and 460 pound-feet of torque as a third engine option, which should be a big treat for the off-roading crew. Whereas the GMC Sierra AT4 already offers the 3.0-liter diesel, the Silverado LT Trail Boss only offers the 5.3-liter and 6.2-liter V8s, both bolted to GM's ten-speed automatic transmission. Then there's the Custom Trail Boss that adds the 4.3-liter V6 as an option, and it and the 5.3-liter V8 only get 6-speed automatics. At the moment, Silverado trims that offer the Duramax charge a $1,045 for it over the 5.3-liter V8. If that gap holds true for next year, the diesel will just about evenly split the price difference between the LT Trail Boss with the 5.3 and the 6.2.   Elsewhere in the range, Driving.ca said Canadian fleet guides show the 4.3-liter V6 and lower-spec 5.3-liter V8 with Active Fuel Management (AFM) instead of Dynamic Fuel Management (DFM) disappearing from next year's base Silverado WT. To clarify, AFM only shuts off half the cylinders in certain conditions, whereas DFM constantly adjusts how many cylinders are firing all the time. As it stands, that would leave the 2.7-liter turbo four-cylinder as the only engine option. However, those other two mills were the only ones left in the lineup that shift through a six-speed transmission, making it possible that they'll rejoin the options list with at least two more gears to choose from. It's not clear if GM will sell the Limited models alongside the majorly upgraded 2022 Silverado. The automaker did just that a few years ago, selling the previous-gen truck as a Limited trim alongside the then-new, current-gen. It certainly wouldn't be the only company to do so, either.

Kid Rock's Chevy Silverado is a working-class hero [w/video]

Rock stars are known for their swagger, and Kid Rock brings a mountain of that confidence to his design for this chrome-festooned 2016 Silverado 3500HD at the SEMA show. Inspired by his song Born Free and a visit to the pickup factory in Flint, MI, the styling is meant to celebrate the folks that build these trucks everyday. The Silverado sparkles like a beacon under the lights at the SEMA Show thanks to its black metallic-flecked paint and acres of chrome. The shiny stuff covers the custom grille, exhaust stacks, 22-inch wheels, and side steps. In a patriotic nod, silver Stars and Stripes run down the side to offer a little contrast to the dark body. Further emphasizing the pickup's huge size, a trailer carries a pair of Gibbs Sports Quadskis that are decorated to match the truck. Kid Rock takes inspiration from – get this – acid-wash jeans for the interior by combining Sky Cool Gray leather seats with metallic-looking inserts. Appropriate for a musician, there's also a custom Kicker stereo in there, and Made in Detroit logos adorn the door sills and glovebox. Related Video: Show full PR text SILVERADO 3500HD KID ROCK CONCEPT CELEBRATES FREEDOM Boldly styled custom 'dually' truck honors working-class Americans LAS VEGAS – Inspired by his hit song "Born Free," musician Kid Rock collaborated with Chevrolet to design a customized 2016 Silverado 3500HD "dually" that celebrates freedom and honors American workers. The truck was introduced today at the SEMA Show in Las Vegas, where it joined other personalized Chevy truck concepts designed to showcase the depth and breadth of the brand's pickup truck lineup. Michigan-born Kid Rock visited the Silverado HD assembly plant in Flint, Mich., to meet with the members of UAW Local 598, who built the truck, before driving it to Chevrolet's design studio to share his ideas for its customization. "The Flint plant – and everyone on the line – is the backbone of America," said Kid Rock. "I wanted the design for the truck to be bold, but with features and elements that wouldn't be out of reach for working-class guys." As a result, his Silverado features several enhancements, including a custom chrome grille with the Born Free logo and an enlarged Chevy Bowtie emblem, chrome exhaust stacks and patriotic graphics that flow across the body sides. A unique execution of the patriotic motif was an idea he expressed at the start of the project.