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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.

2016 Chevy Colorado and GMC Canyon recalled for opening console lids

The Basics: General Motors is recalling 9,200 examples of the 2016 Chevrolet Colorado with build dates between August 25, 2015 and September 24, 2015, and the 2016 GMC Canyon manufactured from August 28, 2015 to September 24, 2015. In total, 8,763 of these pickups are in the US, and the rest are in Canada or Mexico. The Problem: The console compartment lid could open in a crash, and the items inside the storage compartment might hit occupants during the accident. This fault puts the pickups out of compliance with the Federal Motor Vehicle Safety Standard. Injuries/Deaths: None reported. The fix: Dealers will replace the console compartment door latch assembly with an improved part. If you own one: GM has not yet told NHTSA when the repairs for these pickups begin. Related Video: RECALL Subject : Console Door may not Fully Latch/FMVSS 201 Report Receipt Date: DEC 01, 2015 NHTSA Campaign Number: 15V807000 Component(s): LATCHES/LOCKS/LINKAGES Potential Number of Units Affected: 8,763 All Products Associated with this Recall Vehicle MakeModelModel Year(s) CHEVROLET COLORADO 2016 GMC CANYON 2016 Details Manufacturer: General Motors LLC SUMMARY: General Motors LLC (GM) is recalling certain model year 2016 Chevrolet Colorado trucks manufactured August 25, 2015 to September 24, 2015, and GMC Canyon trucks manufactured August 28, 2015 to September 24, 2015. The affected vehicles have a console compartment lid latch assembly that may fail to keep the compartment door closed in the event of a crash. As such, these vehicles fail to comply with the requirements of the Federal Motor Vehicle Safety Standard (FMVSS) number 201, "Occupant Protection in Interior Impact." CONSEQUENCE: If the console compartment door does not remain closed in a crash, the contents stored in the console may strike the vehicle occupants, increasing their risk of injury. REMEDY: GM will notify owners, and dealers will replace the console compartment door latch assembly, free of charge. The manufacturer has not yet provided a notification schedule. Owners may contact Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM's number for this recall is 16370. NOTES: Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

NHTSA could add 1M cars to GM recall

The Detroit Free Press is reporting that the National Highway Traffic Safety Administration may expand a recall campaign for faulty brake lamps. The agency is currently looking into complaints that certain 2004-2011 Chevrolet Malibu models as well as some 2007-2009 Saturn Aura sedans may have brake lights that do not illuminate when the driver presses the pedal. Alternatively, the lamps may also illuminate without input from the driver. General Motors recalled 8,000 Pontiac G6 models from the 2005 model year for the same problem, and NHTSA is currently investigating whether to add 550,000 more G6 models built between 2005 and 2009 to the list for the same issue.
In addition, investigators are currently examining 97 complaints from Malibu and Aura owners with the same trouble. If NHTSA adds those models to the recall campaign, more than one million units could be covered. GM, meanwhile, says there have been no accidents or injuries as a result of the problem.