The contact owns a 2018 Chevrolet Malibu. The contact stated while driving approximately 60 MPH, the braking system failed, and the brake pedal became firm while depressed. The "Engine Power Reduced" message was displayed, and the vehicle went into LIMP Mode, causing the vehicle to decelerate. The vehicle was later towed to the local dealer who diagnosed the vehicle and determined that the braking system vacuum booster pump had failed and needed to be replaced, along with the camshaft and crank case which were damaged during the failure. The vehicle was not yet repaired. The manufacturer was notified of the failure, but no assistance was offered. The failure mileage was 107,000

- Delmar, NY, USA

The contact owns a 2018 Chevrolet Malibu. The contact stated that while driving at 70 MPH, the brake pedal depressed and it traveled to the floorboard as the vehicle failed to stop without warning. After the failure occurred, the contact stated that the vehicle failed to restart upon parking the vehicle. Due to the failure, the vehicle was towed to a dealer where they discovered that both the vacuum pump and camshaft sensor were defective and needed to be replaced. The manufacturer was notified about the failure and referred the contact to the NHTSA Hotline. The vehicle had yet to be repaired. The failure mileage was 79,000.

- Bridgeton, NJ, USA

The contact owns a 2018 Chevrolet Malibu. The contact stated while driving 40 MPH, the contact had to pump the brake pedal to stop the vehicle. The brake pedal went to the floorboard while depressed. Additionally, the "Shift to Park" warning message was displayed even after the vehicle was in PARK. The vehicle was towed to the dealer. The dealer initially diagnosed that the brake pedal needed lubrication. The dealer lubricated the brake pedal; however, the failure recurred with a chemical odor detected. The vehicle was towed back to the dealer. The dealer diagnosed that the brake pump system and shift gear were faulty. The dealer replaced the brake pump system however, the chemical odor was still detected and the "Shift to Park" warning message was displayed. The vehicle was not repaired and remained at the dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 18,000.

- Baltimore, MD, USA

The contact owned 2018 Chevrolet Malibu. The contact stated that while turning at a low speed into a driveway the brake pedal was depressed however, the vehicle independently accelerated to approximately 60 mph and crashed into a tree. The air bags did deploy. A police report was filed. The contact sustained a fractured right foot, whiplash, and several bruises which required medical attention. The vehicle was towed to weil towing and storage. The vehicle was not repaired. Neither the dealer nor the manufacturer were contacted or notified of the failure. The vehicle was destroyed. The vehicle was previously repaired under NHTSA campaign number: 18V576000 (service brakes, hydraulic). The approximate failure mileage was 15,000.

- Birmingham, AL, USA