2016 Chevrolet Malibu: sudden loss of power

Filed Feb 4, 2026 · Electrical, Engine · GA

Have been getting reduced engine power since the summer on and off. Check engine light says its throttle bottle sensor and accelerator pedal position sensor. Which I was told there was a recall but my vin isn’t listed

Filed Dec 29, 2025 · Engine · IN

While driving, the vehicle experienced a mechanical failure involving the engine and lubrication system. Oil leakage was observed, and the engine began operating abnormally. This created a risk of sudden engine failure while the vehicle was in motion, which could result in loss of power, stalling, or loss of control, especially at highway speeds or in traffic. Prior to the failure, warning signs included abnormal engine behavior and fluid loss. The issue was not caused by driver error and occurred during normal operation. Continued operation in this condition presents a fire risk if oil contacts hot engine components. The problem has been inspected by a repair facility, and the failure appears to be related to a mechanical or manufacturing defect rather than wear or misuse. The component is available for inspection upon request. This defect poses a safety risk to the driver, passengers, and other motorists due to the possibility of sudden engine failure, loss of propulsion, or fire.

Filed Dec 4, 2025 · Acceleration · PA

UNKNOWN While I'm driving my car will lose power and go into reduced engine power mode and slows me down to a crawl. I've almost been hit in the back many times for to this. The coffee is P2138

Filed Nov 19, 2025 · Acceleration · NE

Check engine light comes on and dash says reduced engine power

Filed Oct 2, 2025 · Fuel system · NE

The high-pressure fuel pump detached from the cylinder head. The dealership confirmed diagnostic trouble code P228C and reported that one mounting bolt was missing and another bolt was broken off inside the cylinder head, causing the pump to come loose and fail. The damaged parts were replaced at my expense and the components are available for inspection if needed. This failure caused loss of engine power and unsafe drivability, putting my safety and the safety of others at risk. The problem was confirmed and documented by a Chevrolet dealer service center. General Motors has inspected the issue through their dealer network but has denied coverage because the vehicle’s VIN was not included in Recall 18V-18V‑358, even though the failure matches that recall description. Warning symptoms included weeks of engine misfires, loss of performance, and eventually complete power loss while driving. These symptoms first appeared shortly before the failure occurred.

Filed Oct 2, 2025 · Engine, Fuel system · NE

My 2016 Chevrolet Malibu Limited (VIN: [XXX] ) experienced sudden loss of power while driving on 9/11/2025 and set code P228C. The dealership diagnosed the problem as the bolts coming loose from the high-pressure fuel pump, which caused the pump to detach from the cylinder head and become damaged, requiring replacement. This failure directly matches the defect described in the federal safety agency Recall 18V‑358 (GM Campaign 18188/18268). That recall explains that the high-pressure fuel pump can detach from its mounting due to a weld failure, leading to oscillation, damage to the fuel system, and an increased risk of fire. Although the dealer phrased it as “bolts came loose,” the result is identical: the pump detached from the cylinder head and damaged the fuel system. Despite this, my VIN does not show an open recall. GM Customer Assistance told me the repair would not be covered because of the vehicle’s age and mileage (current mileage 129264), even though recalls are federal safety obligations that are not limited by warranty coverage. I am requesting that the federal safety agency review this exclusion and ensure Recall 18V‑358 coverage applies to my vehicle. This defect creates a serious safety risk of fuel leaks and fire. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jul 8, 2025 · Acceleration, Electrical · TX · crash · 4 injuries

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)

Filed Jun 9, 2025 · Acceleration, Engine · 107,000 miles · MO

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.

Filed May 29, 2025 · Electrical, Engine · UT

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.

Filed May 7, 2025 · Electrical, Engine · IL

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.

Filed Feb 21, 2025 · Acceleration, Engine · MN

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.

Filed Oct 18, 2024 · Engine · 138,000 miles · NV

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.