Automatic Transmission Control Module problems of the 2014 Chevrolet Sonic

I bought this car used back in October 2017, I've had overheating problems, the dealership fixed twice under an extended warranty the third time I had to fix myself (they said my extended warranty expired). I noticed my key would get stuck in the ignition after putting the gear in park, I discovered the button on my gear shift is cracked and I have to pull it all the way put to remove the key. The latest adventure is I was driving on the highway in the fast lane at about 75 mph when my car made a pop noise then slightly jerked then started to slow down. The check engine light came along with the traction light, I was able to safely get over to the shoulder I parked and cut the car off. After a few minutes I was able to start my car back up and get it to an auto store to find out why the check engine light was on. The codes that came back stated communication was lost with the tcm and the tcm internal temperature was too high. I was told the most likely solution is faulty wiring at the tcm. This is becoming a headache I'm still paying on this car and doing more repairing than scheduled maintenance.

The contact owns a 2014 Chevrolet Sonic. While driving approximately 70 mph, the vehicle independently accelerated. The check engine and traction warning indicators illuminated. The vehicle was taken to an unknown dealer where it was diagnosed that the transmission control module needed to be replaced. The vehicle was repaired. The manufacturer was not made aware of the issue. The failure mileage was approximately 68,516.