2015 CHEVROLET SONIC Complaints

On September 2, 2022, the locks on my car unlocked and relived while I was driving at about 20 mph. This keeps happening over the last 4-5 months. This time it happened twice in two blocks near my home. I have reported this several times. No codes ever come up. Sometimes the car will stall but always starts right back up. I know I am not the only one with this issue. Please find a cause and issue a recall to get this fixed! This can be very dangerous even life threading if there is an accident because of it.

3 times yesterday - September 1, 2022, my car locks unlocked then locked again and the engine stalled. Dash lights did not go off, but the car died 3 times in a matter of 10 minutes.

While driving, the locks on the car will unlock then relock quickly, the dash will go black and the motor will rev like I am trying to go in the Park position. This has happened several time in town where I live. Update from Aug 11, 2022The first time it happened I took it to the dealership and of course there were no codes and they couldn't find anything wrong. - [XXX], US INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

Dashboard speed indicator dimming and getting brighter for no reason. no warning lamps. Check engine lamp turned on then after fueling vehicle engine won't start, or won't shut off. Vehicle is an automatic transmission. A button must be engaged to put vehicle in park, drive, etc. The Button often sticks and keys cannot be removed because the transmission won't go in to park . On July 17 the button popped out while driving. This could have stranded myself or my family. The cause of the issue is unknown, but drivers may become distracted when the end of the automatic gear shift lever pops out or as in my case when putting the vehicle into park it pops out and breaks off entirely. I believe it to be a defective part that can easily break. My vehicle has less than 70,000 miles. It has not been assessed by an insurance agent or dealership yet

The manual transmission's clutch master cylinder failed on two occasions. It snapped into two pieces. On the first occasion, on March 24, 2022 I stepped on the clutch pedal, and it remained on the floor. The car was essentially inoperable. I was able to coast to a stop by the curb, but the car had to be towed. The part was repaired at a Chevrolet dealer with GM parts and returned to me on March 31, 2022. On June 9, 2022, the part failed again, in the identical manner. The part snapped into two pieces. The Chevrolet dealer is, over my objection, replacing the part. I have objected to the replacement of the part, because I am concerned that it is defective and certain to fail once again in the same way as it did on the two other occasions. I was fortunate on both occassions to be on suburban streets with very light traffic. I was able to coast to a stop at curbside on both occasions. My safety and the safety of others would have been at risk if the failure had happened on a heavily trafficked high-speed superhighway, or had I been ascending a hill on a busy road. The failure of the part makes it impossible for a driver to respond to the situation, as it disables the transmission system.

Vehicle shows P0420 code (Bad Catalytic Converter) at relatively low miles 92,000 miles on a 2015 model with a 1.8L engine.

The car keep getting hot due to liquid missing but I always fill the car up to 2014 it was a recall to all the chef sonics but not the 2015 but is still the same issue

Vehicle shakes and vibrates when first turned on, and driving. Has alot of vibration.

Catalytic converter failed at 110,000 miles. Same exact catalytic converter recalled for 2013 and 2014 sonic models, for some reason not covered by the recall for 2015 models

The contact owns a 2015 Chevrolet sonic. The contact stated that while driving at approximately 25 MPH, there was white smoke coming from under the hood of the vehicle. The contact mentioned that once the vehicle was to the side of the road, the contact noticed that there was antifreeze all over the engine. The vehicle was taken to an independent mechanic to be diagnosed. The contact was informed that the rear water outlet needed to be replaced. The vehicle was repaired however, the failure recurred twice. The manufacturer was not notified of the failure. The approximate failure mileage was 75,000. The VIN was invalid.