Partner
Federal safety regulators have expanded their investigation into General Motors vehicles equipped with the 6.2-liter L87 V8 engine, examining reports that some engines have failed even after receiving repairs under an earlier recall. The latest investigation covers nearly 998,000 Chevrolet, GMC, and Cadillac vehicles from the 2021 through 2026 model years.
What is the problem?
The investigation centers on reports of engine failure and loss of motive power involving the L87 V8. The affected vehicles include the Chevrolet Silverado 1500, Tahoe and Suburban, GMC Sierra 1500, Yukon and Yukon XL, and Cadillac Escalade and Escalade ESV.
NHTSA initially opened a preliminary evaluation after receiving reports of engine failures linked to internal component problems. GM subsequently recalled approximately 597,600 vehicles in the US in 2025 after identifying supplier manufacturing and quality issues involving connecting rods and crankshafts that could contribute to bearing damage, engine failure, and loss of propulsion.
The latest investigation follows continued complaints from owners whose vehicles experienced engine failures after the recall remedy had already been completed. NHTSA’s January 2026 recall query identified 36 such reports, while the agency later received substantially more complaints. The investigation has now progressed to an Engineering Analysis, designated EA26005, and has also expanded to include certain engines produced outside the original recall production period.
What owners should do
There is currently an investigation rather than a new recall covering all of the vehicles in the expanded population. Owners should therefore check their VIN for any outstanding recalls and keep records of engine problems, warning lights, repairs, inspections and dealership visits.
Owners who experience unusual engine noise, loss of power or an engine failure should have the vehicle inspected and retain documentation relating to the problem and any repairs.
When GM engine problems continue after a recall
For owners who have already taken their vehicle in for recall work only to experience another serious engine problem, the situation can be especially frustrating. Documentation of what happened before and after the repair may become important when considering what to do next.
If your GM vehicle has suffered an engine failure or continued to experience serious problems following recall work, The Lemon Firm can help you look at the circumstances surrounding your vehicle.
Get in touch with our team to discuss your experience and find out whether you may have a route to seeking relief.