NHTSA Expands GM 6.2-Liter V-8 InvestigationGeneral MotorsOn Thursday, the National Highway Traffic Safety Administration's (NHTSA) Office of Defects Investigation (ODI) announced it has opened an engineering analysis investigation regarding continued consumer complaints surrounding post-remedy engine failures in vehicles powered by General Motors's 6.2-liter V-8 engine, known internally as the L87. ODI has broadened the scope of its investigation beyond that covered in Recall 25V-274, with it spanning a potential pool of 997,743 GM products.The new investigation comes after ODI received 499 complaints in which consumers reported post-remedy engine failure in their vehicles after receiving the repairs mandated in Recall 25V-274. This recall involved 2021–2026 GM vehicles equipped with the 6.2-liter L87 V-8 engine, which General Motors says were impacted by supplier manufacturing and quality issues. These include popular models like the Chevrolet Silverado, Suburban, and Tahoe, Cadillac's Escalade, and GMC's Sierra and Yukon. In other words, some of GM's best-sellers—and most important profit drivers.CadillacGeneral Motors had taken a two-pronged approach to that recall, stating that customers would either receive a different viscosity oil or a total engine replacement based on the results of a dealer inspection. A total of 473 ODI complaints claimed that their engine failure came after the change in oil, while 26 had received a full engine replacement before another failure occurred. Furthermore, ODI has also received an additional 191 complaints of L87 engines not covered by the original recall failing. NHTSA reports that GM reported receiving 6953 complaints of post-remedy engine failure as well.AdvertisementAdvertisementAs a result, ODI will now begin to investigate L87 engines built after the March 1, 2021 to May 31, 2024 timeline covered by Recall 25V-274. With GM now offering a next-gen small block in both 5.7-liter and 6.7-liter capacities, it wouldn't be surprising to see the L87 phased out of its current roles sooner rather than later.You Might Also LikeIf You Can Only Own One Car, Make It One of TheseThese Are the Most Popular Cars by State
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