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GMC Hummer EV recalled over improperly sealed battery pack

Over 700 units of the GMC Hummer EV built during the 2022 and 2023 model years will be recalled due to an improperly sealed battery pack that lets water in. The firm issued a stop-delivery order at the same time as the recall, and it hasn't found how to fix the problem yet. Assigned recall number 22V-771 by the National Highway Traffic Safety Administration (NHTSA), the campaign includes 735 examples of the Hummer EV and 89 units of the BrightDrop Zevo 600 van. These two vehicles are pegged on opposite ends of the automotive spectrum, but they're affected by the same problem: "the high-voltage battery pack enclosure in some of these vehicles may not have been properly sealed," GMC notes, adding that "flanges on the battery pack enclosure may not have been properly primed or electrocoated." Water can wreak havoc in a high-voltage battery pack. GMC told NHTSA that it has found three EVs with this problem: an internal test vehicle that lost power while driving and two customer-owned vehicles that wouldn't start. As of writing, the firm is not aware of any accidents, injuries, or fires related to the issue, and GMC estimates that only about 1% of the recalled EVs are affected. GMC began notifying dealers of the recall in October 2022, and it plans to start reaching out to owners on November 28, 2022. However, a fix hasn't been found yet. In the meantime, the company issued a stop-delivery order and asked dealers not to attempt their own repairs. This isn't the Hummer EV's first run-in with water-related problems. In August 2022, General Motors voluntarily recalled 424 units of the Hummer EV and the Zevo 600 van due to a high-voltage connector that can prematurely corrode. The problem also let water leak into the battery pack, though it sounds like fixing it was reasonably straight-forward and involved applying sealant to the connector. Related video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Featured Gallery 2022 GMC Hummer EV Edition 1 First Drive View 17 Photos Green GMC Hummer Truck Electric

Junkyard Gem: 2006 Hummer H3 SUV

After General Motors bought the rights to the Hummer brand from AM General in 1999, it continued to sell the civilianized versions of the military HMMWV that was made famous after appearing in the heavily televised Operation Desert Storm. The Hummer H1 (as it became known) never sold in large numbers, but The General decided to make everyman Hummers based on existing GM truck platforms. The Silverado-based H2 came first, debuting as a 2003 model, followed by the Colorado-based H3 as a 2006 model. Here's one of those first-year H3s, found in a Denver self-service car graveyard recently. Now it's time for some Hummer brand history. After the American Motors Corporation bought Kaiser Jeep in 1970, it spun off the fleet and military parts of that operation into a new company called AM General. The best-known AM General products for many years were the Jeep DJ Dispatchers, generally called "Mail Jeeps," and they were sold all the way through 1984. 1984 was also the year that the United States Army put the first AM General-built High Mobility Multipurpose Wheeled Vehicles (HMMWV, which soldiers pronounced "Humvee" at first but eventually adopted the "Hummer" nickname). Around the same time, militarized VW-powered sand rails were being purchased from Chenowth by Uncle Sam. After Arnold Schwarzenegger convinced AM General to build civilianized Hummers, sales of the not-so-civilized brute that became the H1 began in 1992. The H2 and H3 had the misfortune to be launched just before the Great Recession hit and fuel prices went crazy, while a couple of overseas conflicts that were much less popular than Gulf War I made grim headlines and reduced the street appeal of combat-inspired civilian wheels. The H1 got the axe in 2006; GM tried and failed to sell the Hummer brand to a Chinese manufacturer in 2010, as it struggled through Chapter 11 bankruptcy, finally giving up and killing the brand alongside Pontiac, Saturn and Saab. Then the Hummer name was revived in 2022 as an electron-fueled GMC model, and you can buy a 2024 GMC Hummer EV SUV right now (though GMC's website warns of "LIMITED AVAILABILITY" in big red letters, so you might have a hard time actually taking delivery of one). The final 2010 H3s were built for Avis at Shreveport Operations, which itself shut down two years later.

2022 GMC Hummer Edition 1 weighs 9,063 pounds

From the beginning, the Hummer line of vehicles has been synonymous with the phrase, "absolute unit." The M998 Humvee turned to civilian use as the Hummer H1 came with a curb weight of 7,560 pounds depending on configuration. The much more urbane Hummer H2 didn't sacrifice much of those gains, putting about 6,615 on the scales. Let us not forget that the behemoth gravitational pull and square-jawed mass were what every Hummer buyer wanted. So, starting with the brand values and customer demand, and adding the fact that electric vehicles are substantially heavier than their ICE counterparts, no one should be surprised that the 2022 GMC Hummer Edition 1 weighs 9,063 pounds. That's just one of the substantial figures GMC included in a self-certification filing submitted to the U.S. Environmental Protection Agency, the document rooted out by Car and Driver. Last year GMC told us the Hummer would weigh 9,046 pounds, which proves again the Freshman 15 (or 16) is unavoidable.  Loaded up with humans and their accessories, the truck's gross vehicle weight rating (GVWR) comes in at 10,550 pounds. It takes a few other big numbers to keep that kind of tonnage on the go. The Ultium battery weighs 2,923 pounds. With a 617-amp-hour capacity at 400 volts, total capacity comes in at 246.8 kWh, specific energy at 158 Wh/kg. Usable capacity is about 85% less, at 212.7 kWh. For the time being, these numbers put every other pack in a production vehicle in the shade. That gargantuan chemical plant in the Hummer's floor powers a 329-mile range the same way a giant fuel tanks feed a truck that gets 8 miles to the gallon. The miles per gallon equivalent figures GMC submitted to the EPA are 51 MPGe city, 43 MPGe highway, 47 MPGe combined. Motor Trend questioned whether GM applied the correction factor used for window sticker numbers; if not, the standard 0.7 correction drops the MPGe specs to 36 city, 30 highway, and 33 combined. However, trucks with a GVWR beyond 8,500 pounds don't need to display fuel economy figures on their window stickers, so don't expect to see any such details on dealer lots. For comparison, the Rivian R1T Launch Edition weighs about 7,000 pounds, and fits a 128.9 kWh battery good for an estimated 314 miles estimated at 70 MPGe.