1998 Gmc Jimmy Envoy Sport Utility 4-door 4.3l 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.

2022 GMC Hummer EV No. 001 at Barrett-Jackson brings $2.5 million

This year's Barrett-Jackson auction in Scottsdale, Ariz., played host to a bunch of the first examples of hot new cars: VIN No. 001 of the 2022 GMC Hummer EV, 2022 Cadillac CT5-V Blackwing and CT4-V Blackwing, 2021 Ford Bronco, 2021 Ford Mustang Mach 1 and 2021 Ram 1500 TRX. Every single one of them sold for more than six figures, with all the proceeds of nearly $5 million going to charities, but the big winner was absolutely the Hummer with a hammer price of $2.5 million. The Bronco did nicely, too, with a selling price of $1,075,000. You can see the list of the sale prices from highest to lowest of these first examples below. GMC Hummer EV: $2,500,000 Ford Bronco: $1,075,000 Ford Mustang Mach 1: $500,000 Ram 1500 TRX Launch Edition: $410,000 Cadillac CT5-V Blackwing: $265,000 Cadillac CT4-V Blackwing: $165,000 Despite the Hummer going for $2.5 million, it wasn't the most expensive car to cross the block. That honor goes to a 1966 Shelby Cobra 427 Super Snake that was once owned by Carroll Shelby himself. It sold for $5.5 million, the same price it sold for back in 2007. Nearly as pricey as the Hummer was a restored, numbers-matching 1967 Ferrari 275 GTB/4 that went for $2,475,000. Related video:

REWIND: Watch the GMC Hummer EV live reveal right here

It has been a long wait to see the GMC Hummer electric pickup truck, which was teased way back at the Super Bowl in February of this year. And that wait ends tonight at 8 p.m. eastern time when GM pulls the covers off the truck. You can see the whole reveal right here, or during the World Series on Fox or "The Voice" on NBC. For everything we know about the truck, go to our reveal post here. The truck should be impressive. GMC has previously announced it will have up to 1,000 horsepower, and it will have a variety of fun features such as removable roof panels and four-wheel steering that can move the truck sort of sideways with "Crab Mode." The GMC Hummer will also be available in pickup and SUV forms. So be sure to tune in tonight for one of the biggest (figuratively and literally) vehicle reveals of the year. And keep an eye on Autoblog for all the latest on the Hummer and other vehicles.