Automatic Transmission problems of the 2021 Chevrolet Colorado

The contact owns a 2021 Chevrolet Colorado. The contact stated that while driving at an undisclosed speed, the steering wheel briefly vibrated, after which she heard an abnormal knocking sound emanating from an unknown location. The vehicle returned to normal functionality, but the failure became a regular occurrence. No warning lights were illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the steering rack. The vehicle was repaired, but the failure reoccurred. The vehicle was taken back to the dealer, who then diagnosed failures with the lower steering shaft, and the transmission 4x4 climbing gear. The vehicle was repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA hotline for assistance. The VIN was not available. The failure mileage was 53,000.