GM has recalled nearly 600,000 trucks and SUVs equipped with the L87 6.2-liter V8 engine due to defective rotating assembly parts causing sudden catastrophic engine failure. The L87, GM’s 6.2-liter V8 with automatic stop-start and dynamic fuel management, powers high-end vehicles like Escalades, High Country Silverados, and full-size Denalis. Over the past six years, owners have reported engine failures at low mileage. In early 2025, NHTSA launched an investigation into the 6.2-liter V8s in certain Chevrolet and GMC models. GM conducted three internal investigations before acknowledging the issue. GM identified 28,102 field complaints potentially related to L87 engine failures, with 14,332 involving loss of propulsion. There were 12 potentially related crashes and 12 minor injuries reported. Additionally, 42 fire allegations were identified, though causation remains unclear in most cases. The failure rate of 4.7 percent exceeds that of Porsche’s IMS bearing. Despite documented failures since 2021, the recall excludes models made before March 1, 2021. GM plans to specify a higher oil viscosity for the L87, introduce a new oil filter, and replace problematic engines. Affected vehicle owners should expect communication from GM in early June. — new from The Autopian
