The contact owns a 2021 Chevrolet Silverado 1500. The contact stated while driving 20 MPH and depressing the accelerator pedal, the vehicle shuddered, jerked, and hesitated to respond. There was no warning light illuminated. The contact stated that the failure had been recurring increasingly while driving. The vehicle was taken to an independent mechanic, where the vehicle was test-driven, but was not diagnosed. The mechanic determined that the failure was related to the torque converter. The dealer was not notified of the failure. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and informed the contact that it was a known failure. The manufacturer referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 120,000.

- Helena, AL, USA