Federal Government Opens New Investigation Into GM's 6.2-Liter V-8

2-liter V-8 issues continues, as a new investigation by the National Highway Traffic Safety Administration is probing whether even the supposed fix that was implemented for faulty motors isn't necessarily saving these engines from failing. The latest federal investigation was opened on January 16, 2026, and was initiated after NHTSA officials received 36 complaints of engine failures following the prescribed recall work.

Nearly 598,000 full-size trucks and SUVs were subject to recall in April 2025 after rampant engine failures due to sediment on the connecting rods and other potential points of failure were recorded; this initial recall was followed up by a sweeping class action lawsuit in May 2025, and an increase in the scope of the initial federal investigation in October 2025. Owners of 2021–2024 model year Cadillac Escalades, Chevrolet Silverados, Chevrolet Suburbans, Chevrolet Tahoes, and their GMC derivatives were prescribed a full engine inspection, at which point, it was decided if the engine needed to be replaced entirely.

If the engine was found to be in working order, technicians were instructed to fill the trucks with a higher-weight oil. However, the latest investigation alleges that these fixes may not have remedied the problem.

The L87 engine hasn't had an easy life since its launch in 2019, with initial recall documents explaining that the crankshaft dimensions on many of these motors were manufactured out of specification, and lacked the appropriate surface finish. In turn, fatal metallurgy wear has become a common problem, with NHTSA documents recording over 28,000 field complaints potentially related to engine wear or failure.

It appears that GM could be on the hook for some additional engine work in the near future. 2-liter V-8 engines.