2016 Chevrolet Malibu: misfire or rough idle

Filed Apr 28, 2026 · Engine, Fuel system · WI

On 04/28/2026, when diagnosing a reoccurring check engine light on the vehicle at a Chevy Certified Service, the mechanic "Borescoped cylinder 4 and found significant scuffs on the cylinder wall which along with the misfires indicate a cracked piston. The big picture appears to be the piston cracked which caused excessive oil consumption and misfires. The excess oil and unburned fuel overloaded the converter causing it to fail. The engine and converter will need to be replaced." In 2017, a recall was issued by GM to mitigate Stochastic Pre-Ignition (SPI) Causing Cracked Piston (17019). Between the initial purchase of the vehicle (11/2016) and performed service required by this recall (03/10/2017), there were approximately 5000 miles driven. No engine diagnosis was performed or recommended. After the 17019 was addressed, the engine misfires continued along with reoccurring CEL. C.S.P. N182195660 Predictive Monitoring for Stochastic Pre-ignition (SPI) released in 2019 states the 1.5 L LFV engines in certain 2016 and 2017 model year Chevrolet Malibu vehicles may have a preignition condition that requires immediate repair. This condition may cause the engine to perform poorly, misfire, run rough, and/or excessively consume oil. It may also illuminate the vehicle’s service engine light. Over time, if not repaired, the condition can damage the vehicle’s pistons and engine. The VIN for this Malibu was not attached to this notice despite it having SPI recall history. On 06/2023 (after the N182195660 program ended), at 80k miles a diagnosis revealed a potential cracked cylinder with no mention of the pre-ignition condition that could cause the crack, and the only way to fix is to replace the entire engine (as per dealer recomendation). Since vehicle was out of warranty, the repair est. was nearly $10k. I firmly believe my 2016 Malibu has suffered the consequences of poor mismanagement on this recall, and am demanding mitigation from GM to fix this issue.

Filed Feb 24, 2026 · Engine · FL

Fuel Injector Backing ring Failing causing O-ring to dislodge and Rupture due to high pressure fuel leaking past the seal. This is causing a Major fire Hazard. Gm seal kits will not fix the problem do to Backer ring not being in the kit. part number for the o-ring kit is 12673056. this part should not be sold without the backer ring. if installed without the rings they will fail and will be Leaking fuel on the hot Cylinder next to the ignition coils. Misfire and bad fuel smell and possible no start or Fire!!

Filed Oct 23, 2025 · Fuel system · AL

Engine to power is reduced. Poor fuel efficiency. Rough idling while parked. Poor acceleration. Trouble starting up. Burning smell at times.

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 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 May 24, 2024 · Engine · NY

while driving the engine lost power started idling rough and the MIL came on. The MIL was found to be cyl 1 misfire, mechanic tracked it down to a cracked piston. A KNOWN ISSUE WITH THIS MODEL YEAR AND ENGINE. the VIN does not show it as being included in any recall

Filed Mar 21, 2023 · Engine · 92,500 miles · VA

The contact owns a 2016 Chevrolet Malibu. The contact stated that the check engine warning light would illuminate intermittently whether the vehicle was idling or while driving at various speeds. The contact stated there was an abnormal sound of liquid moving around in the dashboard and underneath the hood while driving, especially while accelerating. The contact took the vehicle to the dealer who diagnosed the vehicle and determined that there was an engine misfire. The vehicle had not been repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 92,500.

Filed Sep 10, 2022 · Electrical, Engine · IL

The engine light has illuminated due to a cylinder 1 misfire and ECM lost connection with the fuel pump which also caused problem with the pistons on the vehicle. All of these issue are related to the engine and it’s only 94,343 miles on the car

Filed Dec 12, 2020 · Electrical · 63,000 miles · FL

When vehicle comes to a stop and auto start happens, my radio shuts off. Battery sometimes does not hold charge. Could be the alternator or some kind of electrical misfire or contact. Doesn't happen every time vehicle is started.

Filed Sep 21, 2020 · Driver assistance, Engine · 65,000 miles · GA

Stabilitrak code appears on dashboard - causing low or no acceleration, shaking when still and while in park. Meter reads as a 'misfire code'; total tune up was conducted (replaced all plugs & wiring/coil pack); was stable for about 3 days and then 'stabilitrak' code reappeared with car shaking again.

Filed Jan 15, 2020 · 60,000 miles · TX

My electronic control system is misfiring for a few days now. It is causing my stability control light to come in and also my engine light. When the stability light comes on my car shakes a little bit while driving. I put my vehicle on a diagnostic test and the codes came back that the ECM is misfiring