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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.

2014 Chevy Silverado High Country spied wearing trappings of new luxury trim

Spy photographers have spotted the new Chevrolet Silverado High Country and GMC Sierra Denali out on public streets for a little testing. From the looks of things, the Silverado will receive a much-differentiated front fascia along with special badges and those honking 20-inch chrome wheels. Expect to find a more posh interior as well. Likewise, the Sierra Denali will wear a tweaked nose with the familiar Denali bling. The one of the GMC trucks spotted here rolls on 21-inch gunmetal wheels instead of the 20-inch chrome pieces of the High Country.
Word has it both trucks will go on sale after the Texas State Fair this summer. While General Motors hasn't said for certain what we can expect to find under the hood, we'd be surprised to see anything outside of the range of engines found in the standard Silverado and Sierra models. That means buyers should be able to get their hands on the efficient, 23-miles per gallon 5.3-liter V8.

2024 GMC Canyon Review: Ready for the trail, happy on the commute

Pros: Stellar exterior styling for all trims; punchy powertrain; outstanding AT4X off-road trims; great tech and interior amenities Cons: Only one cab/bed combination; gets expensive quick; firm ride for most trims The 2024 GMC Canyon is an excellent midsize pickup. So is the Chevrolet Colorado, its bowtie-branded twin, though with the new generation, the Canyon does a better job than ever of differentiating itself. It starts with the styling where GMC offers a pick-your-own-adventure amongst the various trims. You can go classy and upscale with a Denali or rugged and mean with the AT4. Off-road junkies can find all they might want in the Canyon lineup now, too, as the AT4X is basically the Colorado ZR2’s doppelganger, enjoying its magical Multimatic dampers for outstanding performance no matter the surface. And if you want even more extreme, thereÂ’s the AT4X AEV Edition. The turbocharged four-cylinder powertrain is more than potent with its 430 pound-feet of torque, and unlike the Colorado that offers various output levels, the Canyon only comes in the highest power spec no matter the trim level. The one downside to the Canyon is its high price, but at least it backs that price up with tech and capability. In fact, the Canyon and Colorado are so good that theyÂ’ve instantly become some of our favorite pickups, regardless of size or segment. Needless to say, then, GMCÂ’s version stacks up very well within its actual segment, leading us to prefer it over stalwarts like the Ford Ranger and Nissan Frontier. It might not have an efficiency answer to the Toyota TacomaÂ’s new hybrid variant, but the Canyon is about as good as it gets for the midsize truck segment in 2024. Interior & Technology   |   Passenger & Cargo Space   |   Performance & Fuel Economy What it's like to drive   |   Pricing & Trim Levels   |   Crash Ratings & Safety Features What's new for 2024? The GMC Canyon was all-new for 2023, so there arenÂ’t many changes for the truck in 2024. GMC did add a new model for the new year with the AT4X AEV Edition that improves off-road performance beyond the already impressive AT4X. You can find our first drive review of the AEV Edition here. Beyond the introduction of the AEV model, GMC makes the 11-inch digital instrument cluster standard across all trims – it was previously only installed on the Denali and AT4X. Other trims had an 8-inch version. What are the CanyonÂ’s interior and in-car technology like?