The contact owns a 2024 Chevrolet Silverado 1500. The contact stated while driving 45 MPH, the vehicle stalled and failed to respond. There were no warning lights illuminated; however, the message “Reduced Acceleration – Proceed with Care” was displayed. The vehicle was then taken to a dealer and was scanned; however, no DTC was retrieved. The dealer was unable to duplicate the failure. The vehicle was not repaired. The contact related the failure to an emissions system failure and was concerned because there was no notification on the regen of the diesel engine. The manufacturer was made aware of the failure. The failure mileage was approximately 11,000.