2012 Gmc Sierra 1500 Sle Crew Cab Pickup 4-door 5.3l 4x4 All Terrain on 2040-cars

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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.

General Motors designers sketch the GMC pickups of the future

It's been a busy few years for GMC's team of stylists. They penned a new look for the Yukon and the Yukon XL, and they gave the Sierra 1500 a nip-and-tuck that we'll discover in the coming months. Overhauling these hugely significant models hasn't stopped them from exploring how the firm's design language can evolve. General Motors Design posted two forward-thinking renderings on its official Instagram account that illustrate two ways to move GMC's design identity forward. Karan Moorjani, who works as an exterior designer for the company's autonomous and electric vehicle division, created a truck that breaks all ties with the Sierra. It's characterized by a tall front end with a wide grille and thin LED headlights, sculpted sides, and an unusually low cab. Generously-sized fender flares and tires suggest Moorjani envisioned it as a serious off-roader. Joe Boniface, a member of GMC's Strategic Advanced Design team, took a more realistic approach to moving the design language forward and away from sister company Chevrolet's. His rendering shows a Heavy Duty model with a Denali-branded grille that takes up most of the real estate on the front end and encompasses horizontal rows of LED daytime running lights. It wears less chrome than the current-generation Sierra HD. Nothing suggests either truck is currently on its way to production; General Motors Design regularly publishes sketches from the brand's stylists. Its fascinating Instagram account also shows a Cadillac off-roader, a battle-ready Chevrolet pickup, and a high-riding, open-top two-seater with General Motors emblems that looks like a race car for the Moon.  "Often, these works are not intended for production," a GM spokesperson told Autoblog. "Instead, designers create them to hone their creative skills, to try new shapes or themes, and sometimes simply for the fun of sketching something badass. The GM Design Instagram account was launched to share some of the most compelling, most badass works GM Designers produce." They're sketches created for the sake of sketching, but they give us a peek at the ideas floating around the minds of the men and women who will draw the next generation of General Motors products. Related Video:

GMC's electric, 1,000-horsepower Hummer SUV makes a surprise appearance

We knew the GMC Hummer pickup would spawn an SUV, but we didn't expect to see it so soon. It quietly appeared in a marketing presentation about electric cars that General Motors streamed online in November 2020. The camera never focused on the SUV, there was always an executive sitting in front of it, but we see enough to tell it's closely related to its pickup sibling. Both battery-powered off-roaders are nearly identical from the tip of the front bumper to the edge of the rear doors. The SUV's overhang is a little bit shorter than the pickup's, though there's presumably space for a third row of seats. Its rear end doesn't appear in the presentation. Nothing suggests GMC made major powertrain changes to the SUV, so it's likely identical to the truck underneath the sheetmetal. Range-topping models will receive three motors zapped into motion by a 24-module Ultium battery pack. Motorists will have 1,000 horsepower and approximately 350 miles of driving range to play with. GMC plans to start building the Hummer pickup in late 2021, and the SUV might not enter production until early 2022. We expect pricing will initially start above $100,000, but more affordable variants will gradually join the lineup during the first half of the 2020s. When it lands, the off-roader will compete directly against the Rivian R1S. General Motors will invest $27 billion into electric and autonomous cars by 2023. Its portfolio of EVs will also include a Silverado-sized pickup, a crossover based on the Bolt, and a high-end Cadillac crossover named Lyriq. "We want to be number one in EVs in North America," affirmed company boss Mary Barra.