2018 CHEVROLET MALIBU Complaints

I have an ongoing issue with the shifter not communicating to the ECU that it is in park. I put the car into park, dash board shows in P (park) and transmission is in park (ie won't move forward with brake released) and when I go to turn the car off I get message that car is not in Park. To remedy this I have to smack the back of the shifter forward sometimes 5-15 times and from light to moderately hard pressure to get the ECU/sensor to realize it's in Park. The shifter was replaced by a Chevy dealer 2-3 years ago but the problem started again. I believe there needs to be a recall due to the same issue ongoing [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Transmission Surge Accumulator System Performance. The car fails to accelerate once it comes to a complete stop, traffic lights, etc. The car will rev up to 5000 RPMs but will not reach 10 mph. This causes problems when driving and I was almost hit on several occasions (more than 8 times) on my drive home to be safe again. The car was taken to the dealership and was reported to have been fixed, after paying a $100 deductible, but only ran properly for one day. Again, I was almost hit 5 times while driving back home, after the repair was made. The check engine light came on after the car presented issues, as I was out running errands, the car was losing power and was not performing well. About 20 minutes after the initial issue, the check engine light came on. I took the car to Auto Zone where they were able to run the diagnostic that came back with the code, P171D Transmission Surge Accumulator System Performance. This took place twice in one week, with the dealership fixing the issue on Tuesday and it failing again on Saturday (after the car sat idle for 3 days, while I was on vacation).

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

Vacuum Booster Pump failed while driving on the highway with my girlfriend and her small child in the car and this common problem for this specific Chevrolet motor and endangered our lives significantly. Over 500 complaints on NHTSA website. No recalls to date. $4,000 damage. Filed official complaint and requested that Chevrolet cover the costs.

The contact owns a 2018 Chevrolet Malibu. The contact stated that a "shift to park turn the vehicle off" message was displayed while the vehicle was in the park position. While driving at unknown speeds, the vehicle stalled. The steering wheel was tight. After slowing down, the driver depressed the start/stop button, and the vehicle shut off and restarted. The vehicle was randomly shut down. After waiting, the vehicle restarted. While depressing the brake pedal, there was an abnormal, unidentifiable noise detected, and the vehicle came to a sudden halt. While driving at 55 mph, the vehicle suddenly stopped, and she hit her head on the steering wheel but medical attention was not provided. The vehicle was pulsating while driving. There was a sound of water going through the vehicle. The vehicle was slow to accelerate and then moved violently. All the instrument warning lights were illuminated. The vehicle was taken to the local dealer, who was unable to duplicate the failure. The vehicle was not diagnosed or reported. The vehicle was taken to another dealer, Capital Chevrolet, at 9820 Capital Blvd., Wake Forest, NC 27587, where it was diagnosed that the vehicle was not safe to be on the road. The oil throttle body and vacuum pump needed to be replaced. The vehicle was not repaired. The contact stated that the failure was related to NHTSA Campaign Number: 20V668000 ( Power Train), and NHTSA Campaign Number: 19V642000 (Electrical System Fuel System, Gasoline, Engine). The manufacturer was not contacted. The failure mileage was approximately 50,000.

My car will stall in the middle of driving will say it is not in drive, the power steering is reduced, and I cannot use the brakes properly. This is a safety issue. As I drive on interstates and highways on my commutes.

The contact owns a 2018 Chevrolet Malibu Hybrid. The contact stated that while driving at an undisclosed speed, the vehicle lost motive power. The shift-to-park warning light was illuminated. The contact could pull to the shoulder of the roadway, where the vehicle failed to restart. The vehicle was towed to an independent mechanic, who was unable to determine the cause of the failure; however, the battery was replaced. The vehicle was repaired, but the failure reoccurred. The vehicle was towed to the dealer but was not yet diagnosed. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 80,000.

Mass air flow sensor has been replaced 3 times. Keeps going bad causing hiccups and hesitation. Very dangerous at times

Service Stabilitrak warning will pop up on my dash. The car loses power. Push on the gas and it sputters. Had it serviced by GMC 2 years ago and now it is happening again. More frequent in colder weather. There are thousands of reddit posts about this same issue from other 2018 Chevy Malibu owners. GMC refuses to acknowledge it is a quality or performance issue on their end.

While driving, my car’s dash suddenly showed a warning message that state “engine power reduced”. I was driving around 45mph at the time of the incident.