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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.

2016 Lamborghini Huracan at the Horse Thief Mile | AutoblogVR

AutoblogVR returns to the Horse Thief Mile in the Mojave Desert to put the Lamborghini Huracan to the test. It's everything we want a modern supercar to be: Powerful, striking in appearance, and a riot to drive. But does it live up to Lamborghini's unique performance heritage? Senior Editor Greg Migliore reviews the Huracan on Horse Thief's unyielding curves and elevation changes to find out. Meanwhile, Autoblog Editor-in-Chief Mike Austin reviews a different kind of performance car – the Chevy SS at the IndyCar circuit on Detroit's Belle Isle. He's ably assisted by ace driver Simon Pagenaud. You must watch his hot lap! The SS is old-school V8 American muscle wrapped in Australian design and engineering. This AutoblogVR segment also launches on the app Sept. 13, and the teaser follows the Huracan preview above. Each week, new episodes will launch on the AutoblogVR App. We'll preview them here on Autoblog, but for the full immersive experience, head over to the app, which you can download for free from the App store and Google Play. Be sure to try it with a cardboard viewer, too!

GM offering factory-backed extended warranty for Chevys, GMCs, Buicks and Cadillacs

Cars are generally more reliable than ever before. When things do go wrong, every automaker offers some form of factory warranty (in most cases at least three years and 36,000 miles, though many extend even longer), providing peace of mind to new-car buyers that many faults will be fixed at no charge to the customer. Starting today, GM is offering a new optional plan that will extend the factory warranty on all new Chevy, GMC, Buick and Cadillac products. In the past, extended warranties have been offered as dealer add-ons, with all profits from these sales going to the dealership. GM's new program can be viewed as another nail in the the looming dealership-model coffin. According to Automotive News, some dealers aren't happy to see GM cut into their business like this, saying that it helps GM far more than it does dealers. GM says the new program will help keep customers in the GM family. Customers are also more likely to visit a GM service center rather than going to an independent repair shop. Currently, new Chevy and GMC vehicles come with three-year/36,000-mile warranties. Buicks and Cadillacs are covered for 4 years or 50,000 miles. The new program extends Chevy and GMC warranties to five years or 60,000 miles. Buick and Cadillac warranties extend to six years or 70,000 miles. GM, citing IHS Markit, says most owners keep new cars for about 6.8 years, so these warranties will cover most of the length of their ownership. The extended warranty will add between $1,000 and $2,000 to the price of a vehicle, and the additional cost can be rolled into the vehicle's purchase or lease price. Unlike many dealer extensions, the factory program covers the vehicle no matter who owns it. That should help increase the car's resale value if it's sold within the covered timeframe. GM says there's no deductible and no need to file a claim form when getting warranty repairs. Additionally, dealerships can continue to sell their own extended warranties or service contracts. Related Video: