NHTSA Complaint #11496472 — 2019 CHEVROLET MALIBU

The contact owns a 2019 Chevrolet Malibu. The contact stated while driving approximately 35 MPH and slowing for a traffic signal, the brake pedal was stiff and could not be depressed. The contact stated he heard a grinding noise coming from the front tires. The contact stated that he was able to slow the vehicle by shifting to low(L) and using the parking brake. The contact stated that the check engine warning light was illuminated. The contact had not taken the vehicle to a local dealer. The vehicle was not diagnosed nor repaired. The vehicle was towed to the residence. The contact had an independent mechanic diagnose the vehicle. The mechanic retrieved DTC: P0556 (Brake Booster Pressure Sensor) failure. The mechanic also determined that the brake vacuum booster pump needed to be replaced. The vehicle had not been repaired. The manufacturer had not been informed of the failure. The failure mileage was 84,697.