Took my car to Chevy dealership to diagnose my car, as it was rough idling, causing hesitation, and knocking... all while the check engine light was on. They showed me two codes my car was giving from the check engine light. They said he would look further into it. They told me I needed a tune up, though I had gotten a tune up 4 months prior. They fixed some things and charged me over $4,000. The day I drove off the lot, the problems were still present. On my way home going about 50 mph, my car slowed down and the engine reduced power illuminated. I kept driving because I needed a car for work. The car continued to decline and acted like it didn't want to accelerate when pressing the gas. I finally took it back into chevy, and they told me it was my pistons. I'm 90% sure there is a defect that they won't tell me about, or the won't fix. I've had the car 2 years. Now the car won't run.

- Waukegan, IL, USA

To whom it may concern, I am writing to formally report a recurring safety-related issue with my 2016 Chevrolet Malibu. The vehicle consistently displays a -??Shift to Park-?? warning message, even when the gear selector is properly in the Park position. This malfunction prevents the car from turning off completely and poses a serious safety and reliability concern. This issue first occurred while the vehicle was under warranty, and the dealership performed a repair. However, the problem has returned, and my warranty has since expired. Despite the previous fix, the issue continues to persist. This malfunction is widely documented among other 2016-?"2019 Chevy Malibu owners and appears to stem from a design or manufacturing flaw in the shifter assembly or park switch. I am concerned that this defect could: Prevent the vehicle from being securely parked. Lead to battery drain due to the vehicle not shutting off. Pose a risk if the driver believes the car is in park when it is not. I am requesting that Chevrolet consider this a safety defect and either recall the affected vehicles or offer extended coverage for repairs. I also ask that NHTSA investigate this issue further as it compromises the safety, reliability, and proper functioning of the vehicle. Thank you for your attention to this matter. I would appreciate any assistance or updates regarding how this issue will be addressed. Vehicle Info: 2016 Chevrolet Malibu E2 Year: 2016 Make: Chevrolet Model: Malibu Mileage: 60,000 VIN: ALREADY INSERT Previous repair date(s): 02/21/2020 Sincerely, [XXX] [XXX] [XXX] Toledo, Ohio INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Toledo , OH, USA

The contact owns a 2016 Chevrolet Malibu. The contact stated that occasionally while attempting to accelerate the vehicle stalled. The contact stated that the failure also occurred while stopped at a traffic light. The contact was able to restart the vehicle and continued driving; however, the check engine warning light illuminated. The vehicle was taken to an independent mechanic where the vehicle was diagnosed and the contact was advised that the throttle position sensor, and the intake airflow system were faulty and needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 163,000.

- Center Point, AL, USA

Happened around 46000 miles after receiving a recall notice in the mail about the pedal positioning sensor causing a reduced engine power signal, and immediately reducing speeds on the interstate. Local Chevy dealership replaced. Fast-forward 80K miles and the same incident is happening, however likely not going to be covered by GM. Same message, same code being detected.

- Maplewood , MN, USA

Car showing warning : engine power reduced Car decelerate unexpectedly Car won-??t accelerate past 20 mph intermittently - when putting car in park, car won-??t recognize when in the park positioned and shows warning : shift to park

- Rochester , NY, USA

I had my vehicle for about 2 years. I noticed that after I went over a certain amount of mileage, my car went into an engine power reduce mode. With the engine power reduce mode my vehicle could only go 25 mph. This was happening to me when I was driving on major highways, etc.. I would have to pull over and stop the vehicle because after certain amount of time it also would tell me oil pressure low to stop engine. I took it to the Chevy dealership to have it looked at. I got the runaround with trying to figure out exactly what the issue was. They kept telling me that it was something else I spent over $1600 in repairs due to them, telling me that they found the issue and corrected it. After about another week or two, The same issue happened, engine power reduced stop engine oil pressure low. The most dangerous part about it is again I-??m driving on interstates heading to work, etc. and the car is slows down on the interstate not allowing me to go over 25 mph again having to pull over on the interstate to give the car a break, crank it back up and get to a safe location. After having multiple mechanics look at it, still unable to fix. It started to get worse where once it pops up engine power reduce, oil pressure low stop engine, the car started jerking & shaking really bad. The only way to stop this from happening is to again shut the car down. I can-??t keep shutting the car down in the middle of the interstate and on major roads. I took the vehicle to the Chevy dealership first they couldn-??t find the issue. They said it was another issue that wasn-??t even the issue so I paid over $1600 for nothing. I took it to Rick Hendrick, who couldn-??t find an issue and all they could tell me was to trade it in. This vehicle issue needs to be recalled. My bf is now having the exact same issue that my car was having & after researching, others are as well. Same year, same model, just a different color. This vehicle needs to be recalled for this ongoing safety issue ASAP!

- Summerville, SC, USA

I will be driving at posted speed limits (typically 55 to 60 MPH) and while going up a hill, the engine loses power. I get a notice on my screen that states engine power reduced. Speed reduces to no more than 35 MPH. This can put others in danger if they are too close or if the roads are icy due to it being winter in Indiana. I put on my hazard lights, and I am able to pull off the side of the road, turn off the car for 5 minutes and restart it and have power back. But engine light remains on. Mechanics cannot find anything wrong. No warnings prior to the incident. In fact, the car loses power and then the message appears on screen. This has happened 7 times in the last 4 months.

- Nashville, IN, USA

Reduce Engine Power - vehicle decreased acceleration drastically while driving on the highway.

- Smyrna, TN, USA

The contact owns a 2016 Chevrolet Malibu. The contact stated that while driving at an undisclosed speed, the "Reduced Power Engine" message displayed and the vehicle inadvertently decelerated. The brake pedal was firm while depressed and the vehicle failed to stop immediately. The vehicle was towed to an independent mechanic, who diagnosed that the vacuum pump needed to be replaced. The vehicle was then taken to the dealer, where it was determined that the vacuum pump deteriorated and went into the engine. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 138,000.

- Henderson, NV, USA

I started smelling a strong smell of gas while operating the vehicle. Took to a dealership who diagnosed a turbocharger clamp and exhaust failure. From what I understand I am not the only one with a clamp/exhaust/seal problem. A friend of mine who owned a GM product had similar problems to the point her engine failed altogether. Please investigate!

- Culpeper, VA, USA

A couple days ago I went to drive my car and it took a second to actually turn on and it was shaking way more than usual and pooped up with a message saying -??engine power is reduced-?? I haven-??t drove my car since because i tried and it was moving very slow, and i also didn-??t wanna cause further issues. For some time now my car has been shaky. i have taken it in and balanced my tires because of this issue and nothing had helped. I am always scared to drive it because it has been so shaky but now that this message has popped up it-??s even worse and it-??s during my whole drive. Also every time i park it isn-??t connecting and says -??shift to park-?? even though it is shifted into park. i have to shake it and press some button to go all register that it is shifted into park and can shut my vehicle off. I have read every where that this issue has happened to so many 2016/2017 chevy Malibu-??s. I have read the dangers and i do not feel safe driving my car like this. I also didn-??t have my car when there was a recall on this exact part before. and i-??m guessing the dealership who had it before me did not fix it, causing the problems to worsen other parts of my car. I can-??t drive this car due to the safety and i believe it should be a recalled. I am not totally sure what is doing it but as of all the other people online, they said it has to do the gas pedal (2k replacement) and fuel pumps and also could have burned wires which my car also has. thank you.

- Hutchinson , KS, USA

I experienced a check engine light and a "reduced engine power" message in the middle of traffic in the stromy rain. I was driving 35 to 40 mph before vehicle slowed to almost a stop and when pressed gas pedal it excel slowly creeped to less than 30 MPH THANKFUL I wasn't rear-ended.Pulled into nearest Autozone part store and diagnostic scan showed the P2138 code. DC severity, sensor, and accelerator pedal position - see photos attached. Waited with engine off for approx over 30 minutes then started vehicle, engine lght off and proceeded to my destination excell with no issues.This has happened several times since purchase of vehicle began 2019. Throttle body repairs, ECM replacements and harness repairs later still reoccurring documented at dealships and repair shops. This is a serious and costly hazard.

- Miami, FL, USA

Update to claim #11614644. Car was inspected by Auto Lenders in Lakewood, NJ. Vacuum pump failed and cam shaft has to be replaced, was told the engine **SHOULD* be salvageable. They won't know until they start taking it apart. Was told it will take 12 hrs for each part at $180 an hr. Damage is estimated at $4500. Car is currently under an extended warranty, we are waiting to hear if the warranty will cover the damage. My son still owes $9000 on the car, we bought it 2 yrs ago. Beyond angry that Chevy/GM has not recalled this car!!!

- Galloway, NJ, USA

Vacuum pump failure. Brakes failed while driving the car, brakes became manual power but was able to pull over safely. There was no previous warning or error codes. Car is currently at a Mr. Tire facility. The manager ran diagnostic code - "reduce engine power" error and found the cause as the vacuum pump. Due to the time of the failure, late Saturday 9/14/24, the part cannot be ordered until Monday from the local Chevy dealership. The facility will not know if there is additional engine damage until the part is remove and inspected. There is known issues with vacuum pumps failing and a class action lawsuit currently in ligation.

- Galloway, NJ, USA

The car will not turn off when placed in the park position. A warning comes on that states "shift to park" when the car is already in park. I have contacted Chevrolet twice and was notified that their are no open recalls on this. This is a very common and known problem with 2016-2019 Chevy malibu as well as Chevy Cruze model. Chevrolet is no help in this matter. I feel this is a large safety issue as you cannot turn the car off. PLEASE HELP!

- Longwood, FL, USA

The main head gasket fails on these vehicles causing oil to leak everywhere and on top of electrical wires. The lost of oil has caused the engine to reduce the engine speed randomly on the highway which had risk of accidents multiple times, by unable to move the vehicle off the road at a reasonable time. The oil sips land on top of electrical wires which creates the risk of fire.

- Spring, TX, USA

Driving and the car does not shift correctly when speeding up onto the interstate and then engine light comes on and words engine power is reduced comes on. Called Chevrolet and can no longer drive vehicle.

- Chesapeake, VA, USA

Vehicle listed a warning "engine power is reduced" and check engine light came on. Vehicle was taken to local dealer shop to have issue resolved. Original thought from technician was the oil was low. Upon topping off the oil problem persisted. After having the engine tested it was determined to have a cracked piston.

- Merriam, KS, USA

while driving the engine lost power started idling rough and the MIL came on. The MIL was found to be cyl 1 misfire, mechanic tracked it down to a cracked piston. A KNOWN ISSUE WITH THIS MODEL YEAR AND ENGINE. the VIN does not show it as being included in any recall

- Maybrook, NY, USA

Vehicle check Engine light on, showing "Reduced Engine Power." Vehicle still able to be driven, but will not accelerate with any proper pace or power. Cannot get above 3000 RPM without losing power, has put me in two dangerous situations in the last two days that almost made me lose my life. On highway, trying to accelerate to match traffic speeds, lose power and had to dive to the emergency lane to not get plowed by a truck. Today, was city driving, at a red light, could not accelerate and had to dive to a crawl the vehicle into a turn lane where I ended up sitting for about 10 minutes till the engine offered enough power to keep driving. By all information I can find online, it seems it is similar to the issues presented by others online and might tie into "Special Coverage N182188250 Loss of Continuity within Accelerator Pedal Position Sensor Circuit" that I found here: [XXX], this issue has been going for about 3 weeks to a month and is only getting worse. I did stop at McCarthy Chevrolet of Overland Park to have codes run about on [XXX], the codes showing do not show in the above link...codes: U1502, U0422, P06DE, C0760...those all present on the paper as "Current." I have not had it diagnosed yet, planning to, service is just so expensive. I have had the car in my car for 1 year and 1 month, purchased from MAX Motors in Harrisonville, Mo. Reporting here as I also saw online that others are facing the same symptoms, and that there is a suit that might be addressing these issues: [XXX] Every time the car is turned on, the warning mentioned above shows. See picture attached. Does not matter what type of driving or set "speed limit" issues show. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Raytown, MO, USA