NHTSA Complaint #11647855 — 2017 CHEVROLET IMPALA

The contact owns a 2017 Chevrolet Impala. The contact stated that while driving at an undisclosed speed, the check engine warning illuminated on the instrument panel. The vehicle was taken to an independent mechanic, who diagnosed failures with the catalytic converter and transmission oil cooler hose. The vehicle was repaired, but the failure reoccurred. The vehicle was taken back to an independent mechanic, who diagnosed a failure with the transmission. The contact was informed that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 129,000.