2018 Chevrolet Malibu

Multiple components and/or system failures/malfunctions, exact cause is unknown. Vehicle is available for inspection upon request. Safety risks include engine power reduction issues that result in unexpected deceleration, and/or sudden/dangerous loss of power/acceleration. Problem has not been reproduced or confirmed by a dealer or independent service center. Vehicle component has not been inspected by the manufacturer, police, insurance, representatives, or any others other than diagnostic trouble code testing at O’Reilly auto parts due to illuminated check engine light. Vehicle displays error messages “engine power reduced,” while driving and/or idle, and “shift to park” when vehicle has already been shifted into park. No obvious symptoms of the problem prior to failure, unknown when first appeared. Vehicle-2018 Chevrolet Malibu LT L4-1.5L 1490cc 91ci GAS DI Turbocharged vin T LFV-4 valve DOHC (Mileage-145000). Primary Powertrain Diagnostic Trouble Code “P0014 - Exhaust Camshaft Position System Performance (Code P0014 indicates that the Bank 1 Exhaust Camshaft Position timing was advanced beyond limits for a predetermined period of time),” with additional Powertrain Diagnostic Trouble Codes “P0011 - Intake Camshaft Position System Performance,” and “P1101 - Intake Air Flow System Performance.” Also receiving ABS Diagnostic Trouble Code “U0422-71 - Invalid Data Received From Body Control Module - Invalid Data.” Suggested solutions included “Replace Variable Camshaft Timing (VCT) Solenoid,” and “Replace Variable Valve Timing (VVT) Solenoid.” Believed to be related to NHTSA ID numbers 11643630, 11586483, 11581989, 11569471, 11568501, 11565871, 11564692, 11635526, 11457416, 11420146, 11416774, 11325303, 11561528, 11559451, 11555493, and approximately 30 other related NHTSA ID Numbers for same error message(s), and/or problem code(s), NHTSA Campaign Number 19V642, NHTSA Campaign Number 19V642000, GM Special Coverage Number N182188250, and GM Recall Number N192221960.

1. This case refers to a 2018 Chevy Malibu. In October 2021, the (gear shift) transmission control system was found faulty and was replaced with an N-CONTROL in the gear shift. Again, in September 2025, the same issue happened, this time replacing the N-CONTROL again as well as the N-HARNESS. Yes, can be available upon an inspection request. 2. This component directly affects how the car recognizes when it is in Park. When it malfunctions, it can confuse the vehicle’s electronic systems and potentially prevent the car from shutting down properly, engaging the shift lock, or starting safely. This creates a safety risk for both me the driver and others around my vehicle. Since this is a recurring issue as well as other 18 Chevy Malibu's I don’t believe this is normal wear and tear. Having to replace the same system twice in such a short period suggests a recurring failure or a design flaw. 3. Yes, the problem has been confirmed twice by Chevrolet dealerships on both occurrences. 4. Yes, the component was inspected by two Chevrolet dealerships during both occurrences. 5. Had warning message "shift into park" both times in the month the car was taken in to be inspected.

The contact owns a 2018 Chevrolet Malibu. The contact stated while attempting to accelerate from a stop, the vehicle shuddered and jerked abnormally. On one occasion the vehicle stalled in the middle of a busy intersection. Additionally, while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was towed to the local mechanic who diagnosed that the transmission accumulator sensor was faulty and needed to be replaced. The vehicle was not repaired. The manufacturer and local dealer were notified of the failure, but no assistance was offered. The failure mileage was 130,000.

I was going about 75 mph on the express way with one lane open due to construction. My car started losing power.I heard the chime and upon the dashboard were the words power reduced. My car slowed down in a matter of seconds to around 45 mph. A 18 wheeler was trailing behind me. I quickly jumped in the emergency lane to my right and took the next exit while riding the emergency lane. I shut the car off at the gas station, sat there for about 10 minutes, restarting my car helped temporarily. I was 3 hours away from home and had to drive back unknowingly if I will make it or not. I reached out to Chevrolet and was told to bring it in and leave it but they had no loaner cars for anyone at that time. I have replaced 2 sensors and now my start /stop has quit working. I spoke with 5 visitors at Chevrolet and we all were having the same issues. This is something ongoing according to my research on this particular vehicle and should be recalled asap.

The contact owns a 2018 Chevrolet Malibu. The contact stated while the vehicle was parked, the gear shifter was shifted into park; however, the message to shift to park was displayed. The vehicle was taken to the dealer where it was diagnosed with a failed gear shifter harness. The contact was informed that the gear shifter harness needed to be replaced. The vehicle was not repaired. In addition, the contact stated that the vehicle was taken to the dealer several times due to the persistent failure. The manufacturer was not made aware of the failure. The failure mileage was approximately 75,000.

ENGINE POWER REDUCED light keeps coming on while driving and the car stalls and won't go over 20mph. Several repairs later and it is still happening almost daily. It has nearly caused an accident several times. This needs to be fixed and a recall for the issue needs to be issued by Chevy. With this many people experiencing this problem, why isn't Chevy obligated to address the issue?