Vehicle ECM fails when accelerating. Loses power/shuts down. Cannot enter freeways, pass, or perform other maneuvers requiring sudden increase power demands. ECM fails to record incident. Every time. Every day. Updated ECM software does not work. Reset check engine mode shuts down other vehicle functions. Have been too close to being run off the interstate, hit when entering from on-ramp, rear-ended in heavy traffic. NHTSA does not investigate because death and injury cannot be linked to failures because the module does not record issues/failures. There is no fix. Every day you get in your car and wonder if today is the day you die because your vehicle failed to perform at a critical moment. Now vehicle shut downs while driving on level surfaces, at constant speed, with no additional demands. Am installing cams to record traffic conditions and vehicle warnings displayed on dash since ECM does not record failures. I believe a thorough investigation into all rear end collisions involving 2018 Malibu should be conducted since the vital link, the ECM record, has been disabled by manufacturer.

- Benton, IL, USA

Shift to park warning when exiting vehicle when the vehicle is in park and engine is off

- Mcallen, TX, USA

My 2018 Chevrolet Malibu has a problem when shifting from drive into park. The message on my dash says " shift to park " even though it is in park. And you can not shut off the engine. You can try shifting it back into drive or low and then go back to park but we get the same message " shift to park " and again even though it is in park, you can not shut off the engine. Isn't this a dangerous situation ?

- Spring Hill, KS, USA

When vehicle is shifted into park and the vehicle is turned off, "shift to park" displays on the vehicles screen and will not allow the vehicle to fully turn off. In order to have the light turn off, sometimes you have to wiggle the gear shift around whereas sometimes you have to press the start button and shift between gears a few times.

- Orlando, FL, USA

On, July 15, 2020 my car gave a "shift to park"message on the dash after I had placed my car in park. I continued to have this error for the next few days, I made an appointment with my dealership. The issue is you are stranded in your car until you can wiggle the gear shift into place sometimes upto 20 minutes. The vehicle is stationary and in the park gear, however the car never turns off. The start button is illuminated amber and dings for assistance. This can possibly drain a battery. The dealership charged $518 to repair a known GM issue. GM customer service admitted to it and so did the service advisor, I received a "new" improved version of transmission control assembly. Probably should be a recall or class action suit.

- Fayetteville, GA, USA

The contact owns a 2018 Chevrolet Malibu. The contact stated that gear selector was placed in the park position and the vehicle was turned off however, the electrical system remained in operation. The contact called wally edgar Chevrolet (3805 S lapeer rd, orion charter township, mi 48360) and the dealer was informed of the failure. The contact stated that the power train was no longer under warranty. The vehicle was not taken to be diagnosed nor repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 42,000.

- Lake Orion, MI, USA

Reduced engine power notification in mid drive on freeway causing car to come to low speed in a 70 mph heavy traffic flow. Multiple vehicles swerve to avoid contact (accident). Unable to pull over quickly as it happened out of no where. Unable to accelerate.

- Ruskin, FL, USA

Car shut off in the middle of driving. With no engine light on. Engine light randomly comes on every other week. Tps doesn't function properly. Idles high some days then drives normally. Sensors was changed engine light comes back on a week later with same code vacuum sensor, maf,

- Miami Gardens, FL, USA

Shift to park message displays once car is placed in park. Car will not completely turn off once in park and ignition is shut off

- Lakewood, CA, USA

When putting vehicle into park vehicle will give message saying that the vehicle is not in park when it clearly is in park. I sometimes have to turn the vehicle off or mess with the gear shift for a little while for the message to finally go because the vehicle itself will not power off until the message goes away. This could be a safety issue and Chevy needs to address this asap! these are brand new cars that are doing this and there shouldn't be any issues with it being a brand new car. They need to make it a service bulltin and or recall.

- Highlands, TX, USA

Auto stop just stoped working also when I put it on park it shows 'shift to park' but the vehicle is on park already.

- Pomona, CA, USA

Vehicle transmission not entering in parking, causing vehicle to move forward or back if put on parking. This could cause accident and serious injuries. This might be a sensor or and electrical failure in the gear selector, because if you wiggle the selector sometimes it will go away. Vehicle will show message vehicle not in parking.

- Miami, FL, USA

Since July 2019 my vehicle has continually shown a check engine light with the message, power engine reduced on the dashboard. When this occurs, the rpms increase drastically and vehicle can not go over 30 mph. This has happened on highways and main roads. It is very dangerous because I can be going 65 mph on the highway and all of a sudden it drops down to 30mph. This has almost caused accidents multiple times. I have attached multiple service records where I have had the vehicle worked on, but yet the issue still occurs at anytime. The vehicle is very unsafe to drive. There has been recalls on this issue and although he dealerships say they fixed it for my vehicle, it still occurs. I have contacted GM and have not gotten an answer or had the problem resolved and it has been over a month I have been working with them. There last reasoning for not giving me a resolution was because they were waiting on service records, yet I called the dealerships and had the service records in less than an hour.

- Middletown, CT, USA

Car says shift to park on dash monitor when car gear shift is definitely in park. Car was stationary in a parking lot after driving.

- Columbia, SC, USA

My transmission has had multiple repairs since I've gotten my vehicle. The vehicle had to go in for several months while they fixed the transmission but once I got it back it instantly had another transmission issue. It has also had the shifter replaced, which is another transmission issue.

- Vacaville, CA, USA

While driving on the freeway at speeds of up to 80 mph at random times the car will suddenly slow itself down to 20 mph and the dash will message that engine power is reduced. It's a serious problem that is dangerous to not only the people in the vehicle but all other vehicles on the road also.

- Wrightwood, CA, USA

Vehicle experienced reduced power before learning about and addressing the recall. A couple of months following my vehicle began to shut off and restart while giving various error messages. This occurred while going speeds less than 35 mph and while stopped. The dealership determined it was a faulty battery censor and was not covered under the warranty. I have had the part replaced and did not experience any issues for roughly 2 weeks. My vehicle today gave a error message that engine power is reduced and the check engine light is on. It is also hesitating/jumping when switching from drive to either reverse or park.

- Cincinnati, OH, USA

Engine power is reduced warning and check engine light anti skid warnings come on.

- Highland Mills, NY, USA

Check engine light, traction control light both on, reduced engine power, speed and transmission shifting limited, cant go pass 3 gear. Started randomly on numerous occasion while driving. Very dangerous.

- Columbia, SC, USA

Check engine light and reduced engine power vehicle won't accelerate on highway in traffic

- Toney, AL, USA