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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.

See all seven colors available on 2016 Chevy Volt

General Motors has been happy to promote the 2016 Chevy Volt in the shiny blue color. On the company's website for the car, though, we can find all seven exterior colors, thanks to the magic of digital technology. We went through the site and played around with the option picker and put together a gallery of all the colors the new Volt will be available in as well as the five interior options. For the record, the exterior colors are: Kinetic Blue Metallic, Iridescent Pearl Tricoat, Summit White, Silver Ice Metallic, Mosaic Black Metallic, Siren Red Tintcoat, Heather Grey Metallic. You'll be forgiven if you can't quite tell the difference between the Pearl and the White in these images, but both colors have been available on the 2015 model year Volt. GM spokesperson Michelle Malcho told AutoblogGreen that buyers do have a preference, with Pearl accounting for 10 percent of the sales and Summit White accounted for 17 percent. The Pearl color is a tri-coat and thus has a $995 price premium, which was likely a factor as well. The interior of the new Volt will have two cloth options (Dark Ash and Jet Black) and three leather choices (Dark Ash, Jet Black, and Jet Black/Brandy). That last one will only be available in the LTZ trim level. You can play around with the color adjuster yourself here. Kathy Sirvio, the color and design manager of the Volt design team, told AutoblogGreen that, "Kinetic Blue is a marketing name. At Design we call it 'Blew Me Away'. That is it in a nutshell. The blue color is vibrant, rich and eye catching. It may not sell at the highest volume, as we know from history whites, blacks and silvers are the dominant color sales. However, it will tell everyone who sees it on the street that here comes a new vehicle and it is expressive in all the right ways." The next-gen Volt arrives later this year with a starting price of $33,995. The powertrain upgrades will push the all-electric range to 50 miles and the gas-only fuel economy to 41 miles per gallon. Related Video:

'Killing a Duramax' Gale Banks YouTube series methodically tunes a diesel to death

Learning or perfecting a skill by watching YouTube videos is known as attending YouTube University. GM Authority picked up on one of the video site's more fascinating courses, hosted by Gale Banks; in a fair world, he should be referred to as Professor Banks when it comes to diesel engines and truck tuning. A few months after GM introduced the updated L5P 6.6-liter Duramax diesel V8 in the 2020 Chevrolet Silverado HD and GMC Sierra HD that ships with 454 horsepower and 910 pound-feet of torque, Banks decided he wanted to methodically tune the engine to death. The purpose of the resulting series, called "Killing a Duramax," is to push more power out of the engine in order to discover which parts break and when — or, as Banks puts it, force-feed the Duramax "until the crank hits the street and the heads hit the hood." With that knowledge, Banks can figure out all the weak points on his way to building what he calls a "Superturbo," that being a supercharged, twin-turbo race engine with more than 1,000 hp. What makes the series fascinating is Banks' knowledge, paired with the company's comprehensive iDash engine monitoring system that keeps tabs on a glut of parameters every step of the way. So for instance, you get Banks explaining the differences between inches of mercury and barometric pressure, how those are different from the water content of the air measured in grains, then showing those readouts on the iDash, then explaining in detail how they affect the air density in the Duramax system. The stock Borg-Warner variable turbo gets a lot of airtime — Banks accuses it of being "out to lunch" because he feels it's the weakest link on the engine. That turns into a turbo teardown and a deep explanation of performance pitfalls, such as when air pressure on the turbine begins to diverge from the boost pressure coming from the compressor. Banks says he can keep close tabs on where power's coming from, because the iDash monitors the horsepower contribution provided by the ambient air, the turbo, and the intercooler separately. The major changes so far are a stouter Precision 7675 turbo and TurboSmart wastegate (episode 5), a twin intake (episode 6), a custom liquid-cooled intercooler from a marine engine, a new GM oil cooler and synthetic oil (episode 10), and new injectors (episode 11).