The contact owns a 2007 Chevrolet Cobalt. The contact stated that the service traction warning light was illuminated and the vehicle vibrated abnormally. The vehicle was not taken to the dealer for diagnostic testing. The failure was not reported to the manufacturer. The failure mileage was 133,800. The current mileage was 133,922.

- Virginia Beach , VA, USA

The traction control light has turned on several times before but usually goes away. While hitting my brakes on the freeway to exit, my traction control light turned on today. I was going about 60 and slowing when it happened. The vehicle jerked violently causing me to slam forward in my chair and almost causing the person behind me to hit me. Once I stopped at the light and hit the accelerator again, it again jerked. I parked my car and shut it off. I turned it back on and put it into drive and immediately the car jolts. It continues to do this each time I switch from park to drive and from braking to driving.

- Chesterfield, MI, USA

The contact owns a 2007 Chevrolet Cobalt. On January 17, 2011 the repairs for recall 10V073000 (steering: Electric power assist system) were performed on the vehicle. The next day while driving approximately 5 mph, the steering wheel became stiff. The traction control and check engine lights illuminated on the instrument panel. The vehicle was taken back to the dealer but the dealer inspected and stated that the diagnostic code indicated a faulty traction control module. The contact called the manufacturer who stated that they would call the dealer. The manufacturer verified what the dealer stated. The vehicle had not been repaired. The failure mileage was unknown. The current mileage was 65,252.

- Commerce, CA, USA