NHTSA Complaint #11493606 — 2012 CHEVROLET IMPALA

I purchased the vehicle used. Four months after I purchased it the traction control, stabilitrak and reduced engine power light came on. I took it to a certified mechanic, he said the code came back as a faulty battery. He replaced the battery and said everything should be fine. Less than 4 hours the car did the same thing. I took it back and he said it was the throttle so he cleaned it costing me a total of approximately 350.00. I didn’t have any problems for 2 months. Now it seems to be getting worse and does it almost every time I start the car. The car idles rough and shifts hard if I drive it. Also the traction control light comes on when I turn left and makes a grinding noise. Since the issue I’ve researched and found several complaints regarding the same issue.