Noises During Shifting Problems of Chevrolet Sonic

The contact owns a 2012 Chevrolet Sonic. While driving approximately 65 mph with the gear shifter in drive, the transmission downshifted into second gear. The vehicle then decelerated to 30 mph, jerked back and forth with a loud unknown noise, and then went into idle mode. The contact coasted the vehicle to the side of the road. The vehicle was towed to an independent mechanic (lowell automatic transmission in MA), where it was diagnosed that the turbine fractured and needed to be replaced. The vehicle was later towed to the dealer (lannan Chevrolet located at 831 rogers st, lowell MA, 01852) where it was diagnosed that the transmission shaft failed and needed to be replaced. The vehicle was not repaired. The manufacturer stated that the VIN was not included in NHTSA campaign number: 14v315000 (power train). The approximate failure mileage was 125,000.

See all problems of the 2012 Chevrolet Sonic 🔎.

Beginning from the first month of ownership. Approx. 28,000 mi. At cold start there is a rattle noise like metal on metal. Then will disappear right after. Has been getting worse/ louder. Hard shifts, loss of power. Now as of last night the check engine light is on and the car runs rough. High idle, stalls, knocking noises from engine. Fault code. P0011?.

This car has so many porblems. I have had it to the dealership on 4 separate occasions and it is getting ready to go in for the 5th time. Each time so far I have been told the same thing. . . . "it doesn't throw any codes and we can't get it to duplicate the issue so there is nothing to be done but just keep driving it and bring it back if it keeps happening". . . . {whatever did mechanics do back in the day before cars had computers?} - anyway, the transmission is automatic and acts like it is grabbing and doesn't want to shift up through the gears so it feels like hard shifting (started before it even had 10,000 miles on it) - it doesn't do it all the time, but often enough that it is a problem that I worry about (it's even done it when on cruise control a couple of times). Now, at less than 30,000 miles the car is idling rough and when I press the brakes it makes a noise in the shifter? the autolights adjust themselves even when there is no change in lighting outdoors (pitch black night and the lights will dim down for no reason at 45mph running down the road with no other vehicles around, etc. ) and the radio adjusts its volume the same way and it even turns itself off randomly. The traction control and stability trac lights come on sometimes, stay on for awhile and then go off. Now that it's getting hot and I'm running the ac, it is acting up also - blowing full blast then dropping down, then back up again. . . . - dealer insists, no codes thrown, won't replicate problem when they have it, therfore no problem exists - this car has problems - I would not recommend a Sonic to anyone. Please investigate transmissions and electrical issues in these cars.