2016 Chevrolet Malibu

The engine power reduced came light came on along with service stability trac. The car would stall after going into auto stop and just shut off. In certain instances it would shutoff when slowed down enough. It was brought in for service where the turbo charge solenoid starter and catalytic converter annd alternator all were replaced due to the turbo braking into pieces and being lodged into the converter and engine. Less than a week later the car returned to stalling at the auto stop feature. When brought in for service it was linked to the alternator and engine control module and mass air flow sensor. The car was then serviced again six months later for the alternator again. Now the car is once again stuck in engine power reduced with no direct codes linked to the problem and the starter was replaced and now the engine is remaining in limp mode. The car has stalled multiple times on not only at stop lights but on the highway and while turning at busy intersections causing traffic jams and even a side collision. The engine light as remained on since the day I got the car.

2016 Chevy Malibu is experiencing a “Shift to Park” issue, where the car does not recognize it is in Park even after shifting correctly. This prevents the vehicle from turning off, leaving lights and electronics running, which can drain the battery. A service advisor at AutoNation Chevrolet Orlando confirmed this is a common problem in GM vehicles like the Traverse and Silverado. She explained the repair—replacing the faulty sensor/shifter assembly—typically costs around $800. Beyond battery drain, there are safety concerns, since the system’s failure to recognize Park could risk the car rolling if the brakes disengage. The issue first appeared about four months ago, went away, and has now reoccurred.

The contact owns a 2016 Chevrolet Malibu. The contact stated that after driving vehicle and shifting into park(P), there was a dinging alert sounded, with the “Shift to Park" message displayed. The contact stated that the vehicle failed to turn off. There were no warning lights illuminated. The contact stated that the failure was a known issue and was related to NHTSA Campaign Number: 16V502000 (Electrical System, Power Train). The local dealer was contacted and instructed the contact to shift to neutral and then park. The instruction worked once, but the failure persisted. The vehicle was not diagnosed or repaired. The contact called an independent mechanic who was uncertain of how to repair the vehicle and suggested that the contact check for recalls. The manufacturer was not contacted. The failure mileage was approximately 90,000. The VIN was not available.

Engine power reduced defect, causing affected models to lose power while driving at highway speeds. My son’s was driving 55 mph and then all of sudden the car decelerated to 20 mph in minutes before his 2016 Malibu stalled on [XXX]. Unfortunately the car did not make it to the emergency lane and as a result a SUV hit his car killing my daughter who was 33 weeks pregnant. The baby survived with lifelong injuries. Despite this recall, GM failed to notify vehicle owners, including the owner of the vehicle involved in the fatal accident on [XXX], in Dallas, Texas, resulting in my daughter’s death. This defect has been found in several 2016 Malibus, prompting a class action lawsuit against GM. Plaintiffs in the class action lawsuit reported having to restart their vehicles or replace faulty accelerator pedal position sensors to address the issue. GM's failure to notify vehicle owners of the safety recall constitutes negligence and gross negligence. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

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.

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.

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.