Accelerator Pedal Sensor problems of the 2017 Chevrolet Malibu

Cruising to work on I-93 in concord, nh traveling around 70 mph and it just lost power again!!! the "reduce engine power light" came on and vehicle would only go 25-30 mph. Thankfully there wasn't a vehicle behind me. I would have been "killed". Dropped vehicle to chevy dealer. They found p2127 for accelerator pedal position sensor failure, replaced gas pedal, cleared codes, road testes. Mileage 76,473. This is absolutely and totally unsafe and unacceptable. The vehicle is in the shop again for the fourth time, same issue. I will report each incident separately.

My vehicle has 6x,xxx miles on it. I first encountered a "reduced engine power" message on November 27, 2019 after driving 15 miles, turning the car off for about 30 minutes, and starting the car again. I called on-star to receive a diagnostic report, which returned a p2138 code. I limped the car home on a rural route with reduced power. Once home, the car was turned off for about 5 minutes. When I turned the car on, there was a check engine light but it ran fine. The light eventually turned off. The car ran fine until the evening of Monday, December 2, 2019. This time the reduced engine power condition occurred as I was in traffic commuting home from work, moving at a low speed. Luckily the road wasn't busy and I was able to pull into a gas station. I powered the car off and back on, and it ran fine all the way home. Based on some research on the internet, I believe the accelerator pedal position sensor is failing. This appears to be a widespread issue with these vehicles. I will be replacing the part on my own. The replacement part was very hard to find, supporting my suspicion that this is a widespread and likely an issue that gm is aware of.

Vehicle went into �engine power decreased� unable to accelerate with the check engine light on as well as throttle sensor on. Took to dealer who checked all of the diagnostic codes and said it was fully operational. Again drove for about 1 month and same thing happened. Took it back in and Chevrolet dealer said it was the accelerator pedal sensor. We replaced the sensor being a $200 part last week and again the check engine light came on. When this happened we were on the highway in a snow storm and had our baby in the vehicle. It locked up and cars couldn't slow down appropriately. We left the highway for safety reasons and kept vehicle on as it was below 0 degrees outside!.

Tl the contact owns a 2017 Chevrolet Malibu. While driving at an unknown speed, the vehicle suddenly decelerated to 5 mph. Afterwards, the vehicle was not able to be driven over 20 mph. The failure recurred four times. The vehicle was taken to jim keras Chevrolet (2000 covington pike, memphis, TN 38128) where it was diagnosed that the throttle pedal position sensor switch needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 59,621.

Back in the 1st week of January 2019 I experienced the first major issue. While I was driving to work on the highway traveling at 65 mph the cars check engine light went on as well as the traction control. The vehicle immediately sent a message on my dashboard that said "reduce engine power" and the car jerked and the speed drastically dropped from 65mph to about 20mph. I was unable to accelerate and was luckily able to drive to an emergency lane while cars and semi trucks were behind me and almost hit me. I turned the car off and then back on again and the engine light remained on, but I was able to safely get to a chevy dealership. The dealership ran diagnostics on it and they determined it was a faulty gas throttle pedal and sensor. The vehicle was in the shop for a total of two weeks, due to them being out on the parts. I paid over 500 dollars for the repair. Less than a week later I was merging on to a highway to go to work again. As I was merging on the engine light went on and the message saying "reduced engine power" came on again. I lost the ability to accelerated and pulled over. I then turned my car on and off again. The engine light remained lit and the "reduce engine power" message remained on this time. I was able to accelerate to a max of 35 mph this time. I returned the vehicle to the same chevy dealership. They ran diagnostics on it and this time they stated it could have been due to the cold weather and said a oil change might help. The oil was changed on the vehicle and then the called saying the vehicle was running very rough when they started it. They also then stated that there was condensation in the radiator from the coolant. They are still waiting for parts and the vehicle has been there almost three weeks. Total time in the shop was 5 weeks out of 6 weeks.

Driving the vehicle on the road and it loses power and wont let you drive over 30 mph. The vehicle also would not start. Had to let the car sit for 15 seconds then try to start it again for it to start. Then it would cut off while stopped at a traffic light. Dealership fixed the pistons and added a new battery still had a problem and now they replaced accel pedal sensor. And now drives a little funny.