NHTSA Complaint #11532006 — 2017 CHEVROLET SILVERADO 1500

Vehicle exhibited a loud bang from the engine compartment followed by a ticking noise from the engine and loss of power while highway driving in a remote rural area. Check engine light did illuminate. Vehicle was subsequently towed and issue was diagnosed by an independent repair shop as a failure of an active fuel management valve lifter and was repaired. Approximately 10,000 miles later while also at speed on a congested highway the vehicle experienced a second failure 12 July 2023. No dash lights nor warning indicators were illuminated, though problem was indicated by severe loss of power and very rough idle. Issue was diagnosed by dealership as failure of #4 and #6 cylinder AFM lifters....which were replaced new following the first failure in summer 2022.