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GM opens official investigation into C8 Corvette transmission leaks

In March 2020, a month after Chevrolet began customer deliveries of the 2020 C8 Corvette, a GM dealer technician created a Reddit thread about a leaking gearbox in a Corvette with 32 miles. That car hadn't even been sold yet. Since then, as a search of "C8 Corvette transmission leak" shows, it's been tales of woe for some owners. Something in the Tremec TR-9080 transaxle in the back of the mid-engined Corvette doesn't work as it should, the fault able to cause codes that the transmission needs service, or that the driver needs to shift to park. In some cases, the battery would die because of follow-on issues after the initial transmission code, that code preventing the car from powering down. As Autoevolution reports, GM filed paperwork with the National Highway Traffic Safety Administration in August to look into what's going on. Between forum threads and GM's investigation document, there are several issues mentioned. The most common appears to be the dual-clutch transmission leaking fluid due to gasket failures like the one suffered by one owner at 858 miles, and another for an owner currently enduring a second leaking transmission. The Midengined Corvette Forum reported that Chevy engineers redesigned the TR-9080 pan, fitting Corvettes with the new unit at some point in the 2021 model year. The original pan was stamped steel unit affixed to the engine with two studs and 13 bolts, plus "reinforcement plates." The updated pan is said to be a cast aluminum unit affixed with two studs and 17 bolts, omits the reinforcement plates, and gets a new machined new groove around its edge to seat the gasket seal. The GM paperwork now at the NHTSA mentions a P1789 code, and says one reason for it could be "debris on the park position sensor magnet causing an incorrect position reading to the TCM." This might be caused by another issue mentioned in forums, which is clogged transmission filters. GM gives instructions for returning transmission filters to the company, and a poster on one forum said the Corvette tech at the dealer where he bought his Corvette told him the automaker "requires every used transmission filter to be returned to GM."  Whatever's going on, the problems haven't stopped, and they go beyond the P1789 code. Over the weekend, a 2022 Corvette owner posted on Corvette Forums that he got a check engine light on his car after just 850 miles.

Recharge Wrap-up: Chevy bi-fuel Silverado 3500HD Chassis Cab, VW Car-Net works with Apple Watch

Volkswagen's Car-Net app will be compatible with the Apple Watch. Using the app, owners will be able to lock and unlock their car, check charging status or fuel level, locate their car, flash the lights, and honk the horn of their vehicle remotely from their wrist. E-Golf owners can begin or end charging or operate climate control through their Apple Watch. The app can also monitor other household drivers with speed and boundary alerts - perfect for the parent who lends their car to a teenager. Read more in the press release from Volkswagen. Chevrolet is launching the bi-fuel 2016 Silverado 3500HD Chassis Cab. The work truck will now offer a version that will run on both gasoline and compressed natural gas (CNG). "CNG burns cleaner and costs less at the pump than gasoline, making it an appealing option for fleets," says GM's Ed Peper. Companies like Southern California Gas Co. find that trucks like this meet their work needs and help them achieve their goals of greening up their fleets, GM says. Read more in the press release from GM. UPS has made a deal to buy renewable natural gas from Clean Energy Fuels. This make UPS the biggest user of natural gas in the shipping industry. Clean Energy Fuels, co-founded by T. Boone Pickens, will provide UPS with its Redeem brand natural gas, which uses methane captured from landfills. UPS hopes to log 1 billion miles with its alternative fuel and advanced technology fleet by 2020. "Our rolling laboratory approach provides a unique opportunity for UPS to test different fuels and technologies," says Mitch Nichols of UPS. "Today's RNG agreement will help mature the market for this promising alternative fuel." Read more in the press release below. UPS BECOMES NATION'S LARGEST USER OF RENEWABLE NATURAL GAS IN SHIPPING INDUSTRY New Agreement with Clean Energy Will Help Grow Market for Use of Methane Gas from Landfills as Fuel Atlanta, May 5, 2015 – UPS® (NYSE:UPS) today announced it has entered into an agreement to purchase renewable natural gas (RNG) for its delivery vehicle fleet from Clean Energy Fuels Corp. (NASDAQ: CLNE). The deal signifies UPS's plan to significantly expand its use of renewable natural gas for its alternative fuel and advanced technology fleet. The company has a goal of driving one billion miles using its alternative fuel and advanced technology fleet by the end of 2017. Clean Energy Fuels, co-founded by T.

Personal testimonies show real-world effect of plugging in with Chevy Volt

At this point, there are tens of thousands of individual stories about what it's like to live with a Chevrolet Volt. But it also remains informative to take a look at one of these in depth. For example, one Atlanta-area Volt owner says he's cut his cents-per-mile ownership costs by almost 40 percent compared to his previous car primarily because of his ability to drive almost all the time on electric power. Jeffrey Cohen told Clean Technica that he put about 14,000 miles on his Volt extended-range plug-in hybrid for the year that ended October 2013, and that more than 92 percent of those were on electrons. He estimates his "lifetime" miles per gallon rating at a whopping 384 mpg, a figure pushed upward by the fact that he installed a Level 2 charger at home while his employer added an external 110-volt charger at work. Cohen is spending 45 cents a mile for his car, compared to 73 cents in his Infiniti M35. As a result, he's spending 45 cents a mile for his car, compared to 73 cents a mile with his prior vehicle, an Infiniti M35. About two-thirds of those Volt costs are for the $349-a-month lease payments, while 15 percent is insurance, 11 percent is for the charger and seven percent for the gas and electricity that actually powers the car. Helping lower that last figure is an overnight electricity rate that's about 10 percent of Cohen's daytime rate. Chevy parent General Motors hopes such testimonies will re-trigger sales for the Volt in 2014. Last year, GM sold 23,094 Volts, down 1.6 percent from 2012. We expect our readers have similar stories they'd like to share in the Comments. Related Gallery 2011 Chevrolet Volt: Review View 22 Photos News Source: Clean TechnicaImage Credit: Lead image: AP Photo/Jae C. Hong Green Chevrolet GM Electric running costs