2017 Chevrolet Malibu: sudden loss of power

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 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 Dec 31, 2025 · Fuel system · OK

I have had experience with the "SHIFT TO PARK" error and I have had the "reduced engine power" error message resulting in an UNEEDED $2200 dollar repair only for it to break down 2 months later, same message this time with fuel spraying under the hood. I NEARLY BLEW MYSELF UP TRYING TO START MY CAR! How is it that I cant find this DANGEROUS defect on the recall list when I easily found the RECURRENT problem online? HELP

Filed Dec 23, 2025 · Acceleration, Engine · NY

While driving at highway speeds, my vehicle suddenly experienced a loss of engine power and reduced acceleration. The traction control light and engine light illuminated, and a “Reduced Engine Power” message appeared. The vehicle would not respond to the accelerator, creating a serious safety hazard. This occurred shortly after authorized dealer service involving the PCV system and related components. The vehicle did not have this issue prior to dealer service. I returned the vehicle to the dealer, and they stated they could not replicate the issue. The sudden loss of power could have resulted in a serious accident. I believe this may be related to improper dealer service, disturbed electrical connectors, or throttle body/engine management components. I am reporting this as a safety concern. I also would like to mention this safety issue has occurred now multiple times with my car on multiple separate occasions with the last prior occurrence being 12/20/2025.

Filed Dec 15, 2025 · TN

Lose power while driving

Filed Dec 14, 2025 · Brakes, Steering · OH · crash

Was driving on highway and starting to exit and my engine light came on and it alerted reduced engine power. I had to slam on my brakes but they were very hard to press and almost non existent and steering was also difficult. Managed to get car to side of road but due to very hard to non existent brakes I did graze a truck and damaged my rear drivers side fender. I am very lucky I didn’t get injured and was able to mostly miss the cars stopped in front of me. I also have the shift to park issue happen at least 4 times a week.

Filed Dec 13, 2025 · Engine, Transmission · MI

Reduced engine power. Car will not accelerate over 35 mph. Almost rear ended. Will be the second time in dealer for same problem. Also, Shift to Park. Also second time at dealer for same problems. You cannot get out of car until you keep moving the shifting handle.

Filed Mar 5, 2025 · Engine · WY

Reduced engine power that causes vehicle to lose power at dangerously low speeds.

Filed Jan 29, 2025 · Engine, Transmission · MI

We have had multiple codes with loss of power.

Filed Jan 13, 2025 · Transmission · WI

While driving, random and complete engine power loss for several seconds, unable to accelerate at all. After power is regained, a cloud of white smoke is seen from the exhaust. The vehicle then drives completely normal, and no codes show up on the dashboard. This has happened three times within two months at around 100000mi on the odometer. Complete power loss could result in being a hazard to other drivers, along with not allowing the driver to make decisions to avoid an accident or propel their vehicle forward. The vehicle is going in for inspection within the next two weeks to determine cause.

Filed Jun 8, 2024 · TX

When the car stops the auto stop turns on, but when the car is ready to move the auto stop will turn the car off or lose power. Another issue is that when the car is in park an error message says shift into park. This will not allow you to turn the car off. The car is in the park.

Filed Feb 19, 2024 · Acceleration, Brakes · TX

The Power Brake Vacuum Assist Failure nearly caused a wreck. The part failed while we were driving on [XXX] going 65 miles per hour on a busy highway. As the breaks gave out the engine light said “Reduced Power”. Moments later, the breaks stopped working and the engine stopped running. We were able to coast off the highway and into an HEB parking lot and have the vehicle towed. The mechanic took the part off and found that it was in pieces causing further examination of the engine to look for the missing metal. Pictures are available to see the damage. Even after completing the repairs the vehicle is showing reduced power. We are still trying to get it fixed but understand that the Chevrolet company is aware of the issue but never issued a recall. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)