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U.S. Army purchases GMC Hummer EV for Light Recon Vehicle testing

The military has been analyzing alternative powertrains for a while, and working with GM vehicular products in that field for at least seven years. In 2016, we got a look at a rebodied Chevrolet Colorado ZR2 with a hydrogen fuel cell powertrain developed by GM and the US Army Tank Automotive Research Development and Engineering Center. In 2017, the automaker created its GM Defense division, winning two contracts for conventionally powered trucks in 2020 and 2021. The Detroit Free Press reports that alt-energy is heavy in the frame, the Army having opened a bid for an electric Light Reconnaissance Vehicle (eLRV). Ten companies showed up with product for a demo last year, at least two of which were electric. The U.S. military's largest branch already purchased a single Canoo EV for testing, now it's also bought a new GMC Hummer EV. It's possible that the specific capabilities of an EV are responsible for the Army's quest. The branch canceled its previous LRV program in 2016 that intended to replace the Scout HMMWVs, which were purpose-built versions of the ubiquitous old Hummer. Military.com wrote that the parameters for that search were a rig that could "carry six soldiers, with a total payload 2,100 pounds. The vehicle must not exceed 11,669 pounds so it can be carried internally or sling-loaded by a CH-47 Chinook helicopter. The vehicle must be capable of mounting a weapon system, such as a 30mm cannon, which can engage targets accurately at a range of at least 1,000 meters." Last November, CNBC reported GM Defense was working on a Hummer EV-based military vehicle. Hummer being Hummer, it's likely GM began exploring the martial route once it greenlit the return of the brand. Last year, Defense Secretary Kathleen Hicks told CNBC, "Electrifying the non-tactical fleet, that’s a no-brainer," but the search for an eLRV signals an eye on something more intense than shuttling troops. Breaking Defense reported in 2020 that the Army was "working with a non-profit consortium of more than 200 companies and universities developing clean transportation technologies, CALSTART." Task and Purpose said the Army's brief for eLRV missions was, "'enhanced mobility, lethality, protection, mission load capacity, and onboard power' for six soldiers to conduct both mounted and dismounted reconnaissance and surveillance missions for Infantry Brigade Combat Teams." That's not necessarily frontline service, but it's not necessarily a garrison shuttle, either.

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

GM will recall 3.5 million pickups and SUVs to fix brake issue

WASHINGTON — General Motors Co is recalling 3.46 million U.S. pickup trucks and SUVs to address a vacuum pump issue that could make braking more difficult and increase the risk of a crash. The recall, which covers 2014-2018 model year vehicles, including some Cadillac Escalade, Chevrolet Silverado, Chevrolet Tahoe, GMC Sierra, Chevrolet Suburban and GMC Yukon vehicles, was triggered because the amount of vacuum created by the vacuum pump may decrease over time, GM told the National Highway Traffic Safety Administration (NHTSA) in documents posted Wednesday. NHTSA opened a preliminary investigation into the issue in November 2018, and said it had reports of 9 crashes and two injuries related to the issue. It provided GM in July with additional field reports that prompted the automaker to open an investigation. The company did not immediately say on Wednesday how many injuries or crashes are linked to the issue but said it could impact braking in "rare circumstances." GM said dealers will reprogram the Electronic Brake Control Module with a new calibration that will improve how the system utilizes the hydraulic brake boost assist function when vacuum assist is depleted. GM said the vacuum assist pump, which is lubricated with engine oil that flows into the pump through a filter screen, can in some cases lose effectiveness over time, as debris such as oil sludge can accumulate on the filter screen. GM told NHTSA that prior model years used a different brake assist system design, and vehicles manufactured after 2018 were not equipped with the affected pump design. Recalls Chevrolet GM GMC