2013 Chevrolet Silverado 1500 Lt on 2040-cars

Auto blog

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.

GM laying off more than 4,000 workers Monday morning

According to reports from Automotive News, The Detroit News, and CNN, General Motors plans to begin laying off more than 4,000 salaried workers starting Monday morning. In a statement to AN, a spokesperson for the automaker said, "We are not confirming timing. Our employees are our priority. We will communicate with them first." We've been expecting layoffs at General Motors since November, 2018. At the time, the Detroit-based automaker announced it would seek to shed 8,100 salaried employees, shut down five assembly plants in North America, and kill off several slow-selling models. One month earlier, GM offered buyout packages to 18,000 workers and said it would seek to cut its global workforce by 25 percent. A spokesperson said at the time the moves were "proactive steps to get ahead of the curve by accelerating our efforts to address overall business performance." The cost-cutting moves are expected to save GM up to $2.5 billion in 2019 and as much as $6 billion by 2020. David Kudla, CEO and chief investment strategist of Mainstay Capital Management, referred to the impending culling as "Black Monday" and told The Detroit News that the layoffs would begin around 7:30 a.m. and continue in waves throughout the coming days and weeks. GM plans to deliver on its fourth-quarter and full-year 2018 earnings report on Wednesday. President Donald Trump plans to deliver the annual State of the Union address a day earlier on Tuesday. We expect to hear plenty more from both sides over the next several days.

GM recalling 426,000 sedans over faulty transmission shift cable

General Motors is recalling some 426,240 sedans that may have a faulty transmission shift cable, according to a National Highway Traffic Safety Administration report this morning. The recall concerns a fault within four-speed automatic transmissions equipped on 2007-2010 Saturn Aura models, and 2008-2010 Chevrolet Malibu and Pontiac G6 models.
The report specifies that tabs on the transmission shift cable may fracture and separate. Such a fault could cause a discrepancy between the actual position of the transmission and the apparent position of the shift lever.
GM is currently working to notify owners of the vehicles in question, and dealers will check and replace shift cables free of charge. Scroll down to read the complete NHTSA report.