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GMC Hummer EV will weigh 9,046 pounds

In the 2000s, Hummer's unique breed of off-roaders summoned a dark cloud of disapproval from environmentalists because they were gas-guzzling SUVs with mammoth dimensions. GMC's born-again Hummer EV will escape the gas guzzler label by running solely on electricity, but it will be even bigger and much heavier than its predecessors. Enthusiast site GM-Trucks reported the Hummer EV will tip the scale at 9,046 pounds (4,103 kilos if you're outside of the United States) in its quickest configuration, and a GMC spokesperson told Autoblog that figure is accurate. For context, the H1 Alpha released for 2006 (and often considered the ultimate Hummer) weighed 8,113 pounds, the H2 checked in at 6,614 pounds with the 6.2-liter V8, and the H3 was comparatively light at 4,600 pounds. When it lands, the Hummer EV will be one of the heaviest new cars sold in the United States. Part of its plumpness can be attributed to its colossal dimensions; it measures 216.8 inches long, 86.7 inches wide, and 81.1 inches tall. In comparison, the H1 stretched 185 inches long, 87 inches wide, and about 78 inches tall. The electric powertrain also played a major role in slinging the Hummer's weight into dually pickup territory. Batteries are heavy, and the Hummer EV's Ultium pack reportedly has a capacity of over 200 kilowatt hours. It has three electric motors, too. Note the 9,046-pound figure applies only to the sold-out Launch Edition model, which will offer 1,000 horsepower, the aforementioned 200-kilowatt battery, and the supercar-like ability to hit 60 mph from a stop in three seconds. GMC will launch cheaper, slower, and presumably considerably lighter variants of the truck in the early 2020s. Although SUVs are often heavier than comparable trucks due to the additional sheet metal, the people-hauling Hummer should weigh less than the cargo-carrying variant. As we reported in April 2021, its output will be limited to 830 horsepower because it's 20 inches shorter than the truck, and the bigger battery pack doesn't fit in this footprint.

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.

GMC Hummer EV range is 329 miles; deliveries in December

It'll be a very Hummer Christmas for some households, as General Motors says it will begin deliveries of the electric GMC Hummer pickup in December, according to GMC boss Duncan Aldred. And we now know the truck's EPA range number: 329 miles on a charge. GM had previously predicted the Hummer would achieve a range of 350 miles.  That 329-mile figure applies to the Hummer Edition 1, the top-of-the-line, $100,000-plus iteration that will be the first trucks off the line. The Edition 1 will also tow up to 7,500 pounds and carry up to 1,300 pounds. Aldred told reporters on a conference call that subsequent, less-pricey models will achieve longer ranges and will be along in 2023. GMC HUMMER EV View 7 Photos More than 80% of Hummer reservations are for the Edition 1, though. Aldred said almost half of the 125,000 people who have expressed interest in the Hummer have put down $100 to reserve one. GM has said the first year of Hummer production is sold out. The Hummer EV joins the Rivian R1T as the first electric pickups to market. Ford's F-150 Lightning rolls out in 2022, and other electrics from Detroit and startups are expected to roll out after that. Tesla is building a $1 billion facility in Austin, Texas, that will, among other things, build the Cybertruck, though timelines on that have come and gone. The Hummer, by contrast, was developed in just 18 months. It made a big splash last week when President Biden took the wheel during a tour of GM's Factory Zero assembly plant in Hamtramck, Mich. Biden gleefully demonstrated the acceleration of the four-ton, 1,000-horsepower truck, which is said to do 0-to-60 in 3.1 seconds. He then declared, "This sucker's something else." Next up for GM's EV push will be the Cadillac Lyriq SUV in 2022. The electric Chevy Silverado and GMC Sierra pickups will be revealed Jan. 5. And the SUV version of the Hummer will be introduced in 2023. Aldred expects the SUV to ultimately make up the majority of Hummer sales. Related video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.