Engine Power Reduced Defect in Chevy Malibu Vehicles. Had the "engine power reduced" message show up countless times.

- Harvey, LA, USA

Check Engine Light constantly comes on. Pedal position sensor is faulty. engine power reduced pops

- Philadelphia, PA, USA

While driving on highway, check engine light came on as well as message saying "Engine power reduced". Car immediately decelerated on the highway and brakes pedal became rock hard and unable to press.

- San Diego, CA, USA

The contact owns a 2018 Chevrolet Malibu. The contact stated while driving approximately 65 MHP, the message "Engine Power Reduced" was displayed and the vehicle decelerated to 30 MPH. The contact stated that the speed would no longer exceed 30 MPH. The cause of the failure was not yet determined. The manufacturer was notified of the failure, but no assistance was offered. The local dealer was not contacted. The contact stated that the failure had also previously occurred but after taking the vehicle to the local dealer no cause of the failure was found. The failure mileage was 110,653.

- Moreno Valley, CA, USA

Vehicle will not stay started will stop when ever even while driving. I haven-??t driven the car in 8 months because it-??s not safe.

- Detroit , MI, USA

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).

- Midlothian, VA, USA

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.

- Delmar, NY, USA

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.

- Clayton, NC, USA

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.

- Grand Rapids, MI, USA

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.

- Las Vegas, NV, USA

I was driving the vehicle on a busy road and a message came up on the display above the steering column saying Engine Power Reduced. I went to brake and was unable to push the pedal in as it was extremely stiff. There were vehicles around me and I tried to use both feet and stand on the brakes and was able to get a little bit of movement but the car still didn't slow down. I had my significant other and brother-in-law in the car and we were all horrified we were going to get into an accident. I turned the hazard lights on and was able to steer to avoid hitting several vehicles and when traffic finally cleared I was able to get over and off the road into a gas station that was uphill and allowed us to slow down and finally stop because I put the vehicle in neutral tried the parking brake which got us to a complete stop and shut the vehicle off. There had been no previous issues with the brakes or messages such as the one that came up right before this issue occurred. The vehicle had to be towed and the repair shop told me the cam driven vacuum pump failed which caused the brake booster to not function. When this failure occurred, it damaged the intake and exhaust camshafts, crankshaft, and several other components. The cooling system and oil to be flushed out as I was told there was metal debris from the damaged parts caused by the vacuum pump failure in the fluids which had been all completely flushed and changed including cooling system, transmission fluid, and oil change The total cost of repairs as a result of the vacuum pump failure setting off a Domino effect of damage was $3536.40.

- Dearborn Heights, MI, USA

Engine power reduced

- Chambersburg , PA, USA

My check engine light will come on, a message will pop up on the screen saying, "steering assist reduced drive with care." When i come to a stop and my car goes into auto stop the car will completely shut down. This can be in the middle of the street or during traffic. It will take my car awhile to start back up. I was told it is a sensor that is going bad consistently, this has happened to me 3 times. This is a known issue with a lot of Chevy Malibu.

- Dallas, TX, USA

I was driving on the interstate at 75 mph and I went to hit the brakes and they didnt work I had to take my feet off the gas and let it stop on its on and it was scary. I glad to be alive. And when I put the car in park it stated the I needed to shift to park and I couldnt cut the car off so after calling someone to come get me from off of the side of the ride. I had to keep putting the gear in park for it to go in park anf the message went away but it keeps coming on.

- Bay Minette, AL, USA

The auto start stop function malfunctioning at a red light, causing vehicle to turn off completely. Vehicle will turn on once the brake is released. The transmission is slipping as well switching from first gear to second gear and causing a delay in departure.

- Tucson, AZ, USA

While driving on the highway my dashboard displayed a warning of -??reduced power steering -??, engine light came off and on, loss of speed, and -??stabilitracking-?? light came on. Brakes also vibrated badly as if they were unable to hold a grip. I was unable to accelerate and was really in danger. The car was taken immediately to the dealership where they replaced the battery and told me it was repaired. On my return from the airport the next morning at 4:30 the same lights and warnings displayed on the dash once again and I had it towed immediately to the dealership. We are now 3 days in and I have gotten no explanation as to what is going on with my vehicle.

- Norwood, OH, USA

Shift to park but vehicle us in park engine control module, causing engibe power to be dropped reduced

- Milwaukee, WI, USA

I have a 2018 Malibu with a very long list of major issues. The Engine loses power constantly along with a -??Engine Reduced Power-?? warning and check engine light. I get a constant -??shift to park-?? message even after placed in park. All the steering wheel buttons/controls do not work. With the exception of the cruise control. Car almost red lines after the power message displays when you try to increase the speed of the vehicle. The back axle/suspension/hubs make a very loud popping sound when I back up or drive forward. Both back wheel assemblies make a very loud wobble noise when driving. Almost like the assemble is going bad. The Auto Stop/Start causes a lot of issues. It causes the car to jerk horribly and that-??s when you hear the popping in the back axles the most. Idk if there is an option to turn this off in this model. But, if there is I can-??t access the message center because the steering wheel controls/buttons don-??t work. Also upon restart the car runs extremely rough and tries to die. The car has really bad powertrain issues. The car not only loses almost all power-??.. but, also acts like the transmission is slipping when taking off from a dead stop. Causing it to jerk really bad when the transmission actually catches. The brake system also seems like it has a lot of issues. Here recently the brakes seem like they don-??t want to stop the car and that leads to pressing the brake pedal down harder resulting in the brake finally stopping the car in almost a dead stop. This could cause a rear end collision or a collision after your designated stopping point. Every time it rains my trunk gets soaked with water leading to a horrible mildew smell and damaged property in the trunk. Also, the steering wheel will start wobbling uncontrollably when driving down the road and then just stops. It causes a violent shake in the front end until it stops. I-??m sure I missed a few things just because of how long the list is. I-??m hoping for a solution to these problems.

- Denison , TX, USA

Purchase car in December 2018, had 3 engine replacement. I am currently in the 3 engine replacement. And still experiencing the same issue - check engine light permanently on for 2 months now. Issues A whistling sound from an opening vent in the hood since last engine replaced. Call stalls, reduces speed and jerk when trying to accelerate. Have reached out to Reed lallier Chevrolet they making it seems that normal and ok. I am scared to drive and cause an accident because the car stalls before picking up. When you put the car in park, the car still not registering at park it is still moving you have to sit and clear the dash board (shift to park, even thou it is in park). Chevrolet only gave 1 engine replacement and $100 gift card. Every other expense is on me, when I still have to pay for the lemon. Unable to locate most recent engine replacement sheet. But can retrieve from dealership if needed. This car is full service and maintained in the allocated time frame reed lallier has the file of needs be.

- Fayetteville, NC, USA

Cam-driven Brake Booster Vacuum failure without warning. My engine died, my brake pedal and steering wheel stiffened, while in moderate traffic. I had use excessive brake force to slow my vehicle to a stop. Currently have 78,012 miles as it is sitting in the repairs shop. This is the first time it has happened, but I worry it may happen again because upon further research, it is a very common part failure.

- Barstow, CA, USA