What 786 owners told NHTSA about the 2016 Chevrolet Impala Eco Eassist

When I was driving my car with my child in it my break tightened up and I couldn’t apply them to stop I had to let my foot off the gas and let my car slow its self down safely. When I got my car home my husband looked at it and found out that my vaccum pump had went out and part of it broke off in the engine. This is very unsafe and this needs to be investigated because people can’t know when the vacuum pump is going to go bad this issue lays on gm and Chevy to make sure the parts they are using will hold up and be safe

NHTSA ODI 11677384

Brake booster pump failed ( gm part # 12704586 ) Causing limited braking and severe damage to internal engine components, camshafts ,timing chain have been damaged This is a ongoing problem in which i have had this pump replaced at my expense several times. The problem stems brake booster pump is lubricated using the engine's oil . Booster pump has a small screen to filter oil, this filter can easily become clogged resulting in booster to run dry and grenade into top of engine. These pieces then interfer with camshafts and timing gears other components

NHTSA ODI 11671410

When I put the car in park and try to turn the car off the Shift Park message comes on preventing me from cutting the car completely off. I put in back in drive or reverse then back in park it still dings and shows the message. I takes a number of repeating these steps for it to stop and turn off and this is happening every time I'm trying to turn the car off.

NHTSA ODI 11668474

The contact owns a 2016 Chevrolet Malibu. The contact stated while driving on several occasions at various speeds, the check engine warning light illuminated, and the vehicle lost power. Additionally, the message “Engine Power Reduced" was displayed. The vehicle was taken to an independent mechanic and was diagnosed and determined that the throttle body sensor needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 107,000.

NHTSA ODI 11665802

I am filing a complaint regarding ongoing and worsening issues with my Chevrolet vehicle, which appear to point to broader defects involving the engine and electrical systems. Months ago, while driving, the car suddenly lost power and displayed "Engine Power Reduced." I had to keep using it due to work needs. Over time, it hesitated more during acceleration and felt increasingly unsafe. When I finally brought it to a Chevrolet service center, I was told the issue involved the pistons. The vehicle also regularly shows a "Shift to Park" warning even when the gear is in Park, raising concerns about the transmission's reliability. The power loss continues, especially when going uphill — again triggering the "Engine Power Reduced" alert and dropping the speed to no more than 35 MPH. A diagnostic showed a P0302 code for a cylinder 2 misfire. The radio head unit, already replaced once under warranty, failed again after just 9 months. Prior to the worsening idle and gear issues, I also received network-related codes involving the ECM and transmission computers. Although I’ve replaced the alternator, the car still shows "Service Electric System" warnings, suggesting ongoing electrical problems. I also noticed GM’s N182195660 campaign involving predictive monitoring for Stochastic Pre-Ignition (SPI) on SCP platforms. My car has the 2.0L turbo engine, and I’m concerned it may be experiencing SPI or coolant intrusion issues affecting overall performance and system integrity. I’m requesting that Chevrolet investigate these problems thoroughly and determine whether my vehicle qualifies for recall, extended warranty, or defect coverage. These issues are persistent, serious, and deserve immediate attention. Thank you for your time. I hope to see resolution soon.

NHTSA ODI 11663745

Shift to park message and park not fully engaging. This caused the vehicle to roll back when parked on an incline.

NHTSA ODI 11663473

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.

NHTSA ODI 11659468

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)

NHTSA ODI 11656608

I am writing to report a serious and unacceptable issue with the exterior paint and clear coat on my 2016 Chevrolet Malibu. The clear coat has become dull and faded on the hood and roof, and the side panels are beginning to chip and peel, despite regular washing and maintenance. This paint deterioration started well before what would be expected in a properly manufactured vehicle finish, especially for one that has been well cared for and is only a few years old. The vehicle has never been in an accident, and the finish failure appears to be due to a defect in the clear coat or paint application process at the factory. This not only affects the appearance and value of the vehicle, but also raises concerns about long-term body protection. Once the clear coat is compromised, the base paint and metal underneath are more susceptible to rust and corrosion. There are countless reports online of other GM vehicle owners experiencing similar issues, and I believe this should be investigated as a widespread manufacturing defect. I request that GM address this issue, either through a recall or a goodwill repair/paint reimbursement program. Vehicle Details: Year: 2016 Make: Chevrolet Model: Malibu E2 Color: Black Thank you for your time and attention. I hope to see GM stand behind its product and take responsibility for this defect. Sincerely, [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11656612

Vehicle will display on dashboard “Shift to park” while the vehicle is placed in “P”. The engine will turn off, but the power remains on until the battery is disconnected from the vehicle. Codes have been verified by the Chevrolet dealership.

NHTSA ODI 11654899

The contact owns a 2016 Chevrolet Malibu. The contact stated that upon depression of the brake pedal, the brake pedal made an abnormal grinding sound and became stiff. The check engine warning light was illuminated. The contact's husband replaced the brake sensor; however, the failure recurred several days later. The contact related the failure to NHTSA Campaign Number: 16V272000 (Electronic Stability Control). The dealer was notified of the failure and informed the contact that the VIN was not included in the recall. The contact was provided an estimate for a diagnostic test and was referred to the manufacturer for assistance. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline to report the failure. The vehicle was not repaired. The failure mileage was approximately 120,000.

NHTSA ODI 11652737

MY SHIFT TO PARK LIGHT IS COMING ON

NHTSA ODI 11649401

The contact owns a 2016 Chevrolet Malibu. The contact stated that after shifting to park, the message to shift to park was displayed. The failure occurred intermittently and had become more persistent over time. The vehicle was not taken to the dealer to be diagnosed or repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 130,000.

NHTSA ODI 11649409

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.

NHTSA ODI 11648171

Shift to park message on odometer after vehicle is already in park

NHTSA ODI 11646944

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.

NHTSA ODI 11644103

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

NHTSA ODI 11641570

The contact owns a 2016 Chevrolet Malibu. The contact stated that occasionally while shifting into park(P), the computer failed to register that the vehicle was in park(P). The message "Shift to Park" was displayed on the instrument panel. The contact stated that during the failure, the doors failed to lock. No warning lights were illuminated. The vehicle was taken to a local dealer where the vehicle was diagnosed, and the contact was informed that the shifter, shifter harness, and shifter switch needed to be replaced. The vehicle was repaired; however, the failure persisted. The manufacturer was notified of the failure. The approximate failure mileage was 47,000.

NHTSA ODI 11637934

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!

NHTSA ODI 11635330

I am writing to formally lodge a complaint regarding an ongoing issue I have encountered with my 2016 Chevrolet Malibu. Recently, I experienced a significant problem with the vehicle’s trunk and rear seat release mechanism, which has made it impossible for me to access the trunk or fold down the rear seats. The specific issues I am facing are as follows: Trunk Latch Stuck: The trunk latch has become stuck, and I am unable to open the trunk manually or with the remote key fob. The latch mechanism appears to be malfunctioning, and it will not unlatch when attempting to open it. Remote Key Fob Failure: The remote key fob, which is typically used to release the trunk, no longer works, making it impossible to access the trunk from outside the vehicle. Seat Release Mechanism: Additionally, the release button for folding down the rear seats is also not functioning, and I cannot lower the seats from inside the cabin. Typically, this release mechanism can be accessed from the trunk; however, due to the trunk being inaccessible, I am unable to release the seats, which is an urgent issue. This situation is highly inconvenient and concerning, as I rely on the trunk and rear seats for storage and daily functionality. The inability to access the trunk or fold down the seats creates a major safety and usability issue, especially in situations where I need access to the trunk in emergencies. I kindly request that this issue be investigated and resolved as soon as possible. Ideally, I would like to have the trunk latch mechanism repaired and the seat release system fixed so that I can safely and reliably use my vehicle. Please let me know how we can proceed to address this matter, whether through an inspection, repair, or replacement of the defective components. Thank you for your prompt attention to this complaint. I look forward to your swift response and resolution to ensure that my vehicle remains functional and accessible.

NHTSA ODI 11634960

The car has a seat belt electrical problem it makes sound once in a while indicating for the driver to put their seat belt on. Also there is issues with the brake sensor. The #1 issue is the Transmission Accumulator Pressure Pipe, when it breaks all your transmission oil pours out from the bottom of the vehicle. The part is about $20 but if not installed right you will think that your transmission is dead but it's not.

NHTSA ODI 11629477

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.

NHTSA ODI 11629154

The contact owns a 2016 Chevrolet Malibu. The contact stated that while the vehicle was parked overnight on an incline with the front of the vehicle facing forward, the contact stated that the electronic parking brake unexpectedly released, and the vehicle rolled away and crashed into the neighbors vehicle, causing damages to the headlights and the bumpers of both vehicles. The contact stated that there was no one inside the vehicles during the crash. The vehicle was not taken to a dealer or an independent mechanic to be diagnosed or repaired. A Police report was not filed. The vehicle had not been repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 102,000.

NHTSA ODI 11626928

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

NHTSA ODI 11622869

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.

NHTSA ODI 11620543