Chevrolet Malibu loss of power problems

Filed Nov 8, 2026 · Electrical, Engine · FL

i am filing a formal safety complaint regarding my 2020 chevrolet malibu. my vehicle recently displayed a “service ESC” warning along with a flashing check engine light. these warnings appeared unexpectedly and have raised serious concerns about the safety and reliability of my vehicle. the electronic stability control system is an important safety feature, and a flashing check engine light may indicate a serious engine malfunction. i am concerned about the possibility of experiencing reduced engine performance, loss of power, or compromised vehicle control while driving. i am also aware of reports from other chevrolet malibu owners describing similar warning messages and electrical or performance-related problems. i believe these issues warrant investigation to determine whether there is a recurring manufacturing defect affecting these vehicles. i am requesting that the federal safety agency investigate these safety concerns and determine whether a recall is necessary

Filed Oct 29, 2026 · Engine · 46,000 miles · GA

The contact owns a 2023 Chevrolet Malibu. The contact stated that the check engine warning light was constantly illuminated, and the message "Engine Reduced Power" was displayed while depressing the accelerator pedal. The vehicle was taken to the dealer, where it was diagnosed and determined that the turbo charger assembly had failed and needed to be replaced. The contact declined to pay for the repair. The manufacturer was notified of the failure by phone and informed the contact that the vehicle was not covered under warranty. The contact continued driving the vehicle, and the failure persisted. As per the manufacturer’s guidance, the vehicle was taken to Maxie Price Chevrolet Atlanta (3600 Atlanta Hwy, Loganville, GA 30052), and the turbocharger assembly failure was confirmed, and the contact was informed that the part needed to be replaced. The manufacturer was notified of the issue but denied assistance because the vehicle was not included in Special Coverage Program: N252508360. The failure mileage was approximately 46,000.

Filed Oct 27, 2026 · Steering · NY

Power steering and esc lights came on, Lost power assist.

Filed Oct 23, 2026 · Steering · TN

Lost power steering after making a left hand 90 deg. turn

Filed Oct 7, 2026 · Brakes · TX

I was driving on the tollway at 75 mph when I saw stopped traffic ahead of me, and when I tried to apply the brakes, they went from soft to hard and completely stopped working; I had to swerve across lanes into the grass to avoid a massive accident and to save my life, as well as the lives of my passengers and the people who would have been involved. The vacuum pump had completely blown up, causing the brakes to fail, and it also destroyed my camshaft, so I lost engine power as well. I looked it up online and it is a very common issue that GM needs to address because of how severely dangerous it is.

Filed Sep 26, 2026 · Acceleration, Brakes · IL

I was driving in town through a stoplight when I noticed my brakes stopped working. Also when I had stopped the car still in drive and the car had shut off completely in the middle of the road and was not able to turn back on. The car would keep trying start but none were successful. My car also stated that there was reduced power to the engine and the car would hesitate to gain speed as well. My safety and others were put to risk because my brakes stopped working so I could’ve caused an accident. When we trying to find what was wrong with it through a code reader we had noticed the piece had shattered inside of the engine. No insurance, police or manufacturer has inspected the issue.

Filed Sep 9, 2026 · Transmission · MI

Turbo cooler and turbocharger failure, diagnosis and replacement on February 4 and February 17, 2026 by a certified GM dealership. Replacement of these parts was not included in service bulletin N222372590 (issued 12/22/22), which covered 100% replacement for the exact parts for the exact engine for a number of other GM vehicles manufactured from 2016-2022. The total repair cost for these two part replacements was $4,951.11 for a car that was purchase just two months prior for $17,000. A great disappointment! Code for issue in both cases was P0299. The failed parts resulted in significant engine power loss, which made it unsafe to drive as acceleration away from intersections and on entering the highway was poor!

Filed Sep 3, 2026 · Fuel system · FL

Driving along the highway the CEL light came on followed by reduced engine power warning. Vehicle abruptly slowed down to 35mph (limp mode). Were there to be another vehicle behind me, they would have to do emergency braking. My vehicle would not start after pulling over to the shoulder. A tow truck was dispatched, and after diagnosis from the service center; The fuel pump module was found to be defective.

Filed Sep 2, 2026 · Engine, Transmission · 180,000 miles · GA

The contact owns a 2018 Chevrolet Malibu. The contact stated that while the vehicle was parked, the message "Shift to Park" was displayed on the instrument panel. The gear shifter was shifted back into drive and then back into park to turn off the vehicle. The contact also stated that while driving approximately 65 MPH, the vehicle shuddered, started to lose automotive power, and then continued driving; however, the vehicle operated at reduced power and failed to exceed 30 MPH. The check engine warning light was illuminated. The vehicle was restarted; however, the failure persisted. The contact stated that there was an unknown liquid dripping underneath the vehicle. The manufacturer was notified of the failure. The failure mileage was approximately 180,000.

Filed Sep 1, 2026 · Engine, Transmission · MI

I understand that the vehicle is outside of its original warranty period. However, I do not believe that the expiration of the warranty should automatically make me responsible for a component failure that occurred at only approximately 39,000 miles. The PCV valve and orifice are not routine maintenance items that I would reasonably expect to require replacement at such low mileage. Unlike tires, brake pads, batteries, or other components that are expected to wear out and require periodic replacement, the PCV system is an integral part of the engine's emissions and crankcase ventilation system. A failure at only 39,000 miles seems premature and should not reasonably be characterized as ordinary wear and tear. More importantly, GM itself has acknowledged problems involving the PCV system in Chevrolet Malibu vehicles. GM Technical Service Bulletin and TSB 18NA246 and TSB 20-NA-047 specifically addresses plugged PCV orifices on 2016–2022 Chevrolet Malibu models and provides a diagnostic and repair procedure for this condition. The bulletin identifies the PCV orifice as the causal part associated with the condition being addressed. I recognize that a Technical Service Bulletin is not the same as a recall or an extension of the vehicle's warranty. I am not claiming that GM is necessarily obligated to repair the vehicle under the expired warranty. Rather, I believe GM's own technical documentation demonstrates that this is a recognized issue involving a specific component and is not simply an ordinary maintenance item that a customer should reasonably expect to replace at 39,000 miles. The approximate cost of this repair is $1300 for a failed $40 part!! Even GM changed the design of this component because in years past and newer years this part replacement was a 20 minute job, not a 5 hour complete replacement of the valve cover! Failure to repair this faulty design could lead to excessive oil loss and immediate loss of power due to the engine ceasing.