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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.

GM Halts Sale Of Most Chevy Cruze Models

General Motors has told dealers to stop selling some 2013 and 2014 Chevrolet Cruze compact cars. But the company won't say why. Dealers say stop-sale orders are routine and almost always made to fix a safety problem. They received the order in an e-mail Thursday, but no reason was given. The move comes as GM deals with fallout from a delayed recall of 1.6 million older small cars to fix an ignition switch problem. The company says the switches can slip out of the run position and shut down the engine. That causes loss of power steering and brakes and disables air bags. GM says the problem has been linked to 31 crashes and at least a dozen deaths. Spokesman Greg Martin says he has no details on the Cruze. Related Gallery Chevy Impala Earns Highest Accolades From Consumer Reports Recalls Chevrolet GM Cruze

Recharge Wrap-up: Chevy Impala bi-fuel sales; VW e-Up fire

Chevrolet has delivered about 200 units of its bi-fuel Impala so far. The automaker originally planned to begin sales in summer of 2014, but was delayed over a year due to quality concerns. Now, the bi-fuel Impala, which runs on both gasoline and CNG, has begun delivery, mostly to commercial and fleet customers. The car begins at $38,210 (including destination charges), and will be available at 3,200 US dealerships. Production of a 2016 model is underway. Read more at Green Car Reports. The US Department of Energy (DOE) has announced $35 million in funding for hydrogen and fuel cell technology projects. The money will support research and development, manufacturing, and early deployment of the technologies. The DOE also wants to bring together consortia to work together on fuel cell cost, performance, and durability, as well as hydrogen storage research. "As FCEVs become increasingly commercially available, the Energy Department is focused on advancements to enable hydrogen infrastructure including production, delivery, storage, and manufacturing, as well as continuing to reduce fuel cell cost and improve durability," the DOE said in a statement. Read more from the DOE. A Volkswagen e-Up! caught fire after a collision with a train in Norway. The driver, Christopher Traasdahl Saether, was able to jump from the electric Volkswagen before the train hit, and was physically unharmed. It also appears that there were no injuries among the passengers on the train. "It was quite a way to start the day," says Saether. A photographer at the scene reported that the car burst into flames when a salvage crew attempted to remove the wreckage from the railway crossing. See the video and read more (in Norwegian) from Fredriksstad Blad. Featured Gallery 2015 Chevrolet Impala Bi-Fuel View 14 Photos Related Gallery 2014 Volkswagen e-Up!: Quick Spin View 20 Photos News Source: Green Car Reports, DOE, Fredrikstad BladImage Credit: Chevrolet Government/Legal Green Chevrolet Volkswagen Alternative Fuels Safety Electric Natural Gas Vehicles recharge wrapup