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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 renders new Chevy Colorado, GMC Canyon pickups

At a series of industry seminars in Traverse City, MI today, General Motors executive vice president Dan Ammann gifted us with our first glimpse of the upcoming midsize pickup range from Chevrolet and GMC.
Just two slivers of nose are all we can see of the soon-to-be announced Chevy Colorado and GMC Canyon, though the teaser image does make plain that the pair will follow the styling cues (at least up front) found on big brothers Silverado and Sierra.
GM hasn't given us much in the way of detail in its ultra-brief press release that accompanied the teaser image, which is to be expected. We're told only that the pair of trucks are designed to be "capable, versatile and fuel-efficient alternatives to full-size pickups" and that production will start sometime in 2014, at the Wentzville, MO assembly center.

Autoblog Minute: Ford Ranger, UK Mustang, Hyundai Hybrid

Ford may bring the Ranger back to the US, the UK goes nuts over the Mustang, and the battle of hybrids heats up with spy shots of the Toyota Prius and a new Hyundai. Autoblog's senior editor Greg Migliore reports on the weekly recap edition of Autoblog Minute. Show full video transcript text [00:00:00] Ford may bring the Ranger back to the US, the UK goes nuts over Mustang, and the battle of hybrids heats up with spy shots of Prius and a new Hyundai. I'm Autoblog senior editor Greg Migliore and this is your Autoblog Minute weekly recap. 2011 was the last time we saw Ford's midsize pickup in the US but according to a report from the Detroit News we could see production of the Ranger at the [00:00:30] Dearborn automaker's Michigan Assembly Plant as early as 2018. Ranger could compete with the Chevy Colorado and perhaps revive the compact and midsize pickup market for Ford, but the future of Ranger in the US depends a lot on Ford's ongoing negotiations with the UAW. About 2,000 orders for the 2015 Mustang were placed in the UK, tying up production of the pony car until July 2016. According to details in a press release from Ford UK, [00:01:00] it looks like Brits are a lot like their American cousins, opting for the 5.0 liter V8, with Race Red as the popular color of choice. Photos of the 2016 Toyota Prius leaked generating a lot of buzz over the styling. This fourth generation Prius will have some new competition as spy shots of a new Hyundai also surfaced this week. The car is said to be a hybrid and a bonafide "Prius fighter." Those are the highlights from the week that was. Be sure to check out my full recap this Saturday, [00:01:30] including the latest in FCA rumors for 2016. For Autoblog, I'm Greg Migliore. Autoblog Minute is a short-form video news series reporting on all things automotive. Each segment offers a quick and clear picture of what's happening in the automotive industry from the perspective of Autoblog's expert editorial staff, auto executives, and industry professionals. UAW/Unions Ford GMC Hyundai Toyota Truck Hybrid Autoblog Minute Videos Original Video