Engine Shut Off Without Warning problems of the 2006 Chevrolet Cobalt

2006 chevy Cobalt. After coming to a stop ,at a stop sign, for example, steering wheel locks, engine shuts off, key sometimes sticks in the ignition lock, occurs randomly and with out warning. Car will restart and behave normally. Dealer replaced ignition switch under recall in late 2014. Went to dealer service department for help with sticking ignition switch. Currently dealer refuses to reinspect ignition switch with out agreement to diagnostic charge. Contacted gm customer service. Gm admits there is a extended warranty until 2020 for the ignition switch {warranty letter 14632) customer service rep further indicated that any parts replaced have a 1 year warranty only. And my ignition switch is past parts warranty. Gm customer service stated that the dealer is within there rights to demand a diagnostic fee if the dealer determines the problem is not the ignition switch. We indicated to the gm customer service that the ignition switch is locking up again. Its was my understanding that gm feels that the recall repair is a one time event. Gm refuses to look at the ignition switch again unless I agree to pay for diagnostics regardless of any safety issues involved.

Was driving on highway at 65mph and car shut off with no warning and reading engine disabled. Pulled over turned it off and back on the same thing happend 5 minutes later.

I was driving down the road. I reached 55 and my engine shut off. I had no brakes or steering and went to right in ditch and hit a telephone pole.

I was driving the car at about 32 mph when the engine shut down. I traveled across four lanes hitting the curb head on then hitting a concrete flower bed( approximate hit 12-14 inches), traveling over this again hitting a curb in a parking lot and then the car came to a rest. The airbags did not deploy and the car was not running. This is not the first time the car has stopped running like this. When I first purchased it in February 0f 2006 within the first week the ignition would not turn over requiring a trip to the dealership. The ignition has been replaced at least 5 times. About three months into owing it I was driving down the road and the engine was trying to restart it self. It then stopped and I ended up in a ditch. Again the airbags did not deploy. Finally, in 2012 a school bus backed into the front of the car with it running and the airbags did not deploy. The igniton was replaced on 6/04/2014 under the mandatory recall. Within 3 days the ignition once again would not turn on and then when it did the engine dragged as if the battery was bad. The battery is one year old. I have had this problem non-stop since the replacement part. I called graff Chevrolet in mt. Pleasant and I got the standard response, "we can"t duplicate it". When I insisted the car needed to be looked at I was told, we have the right to refuse service and we can no longer service your car". I've called other dealerships only to be told the car needs to go back to where the recall part was replaced.

The throttle body becomes extremely 'gunked up,' causing the engine to shut off if the rpms drop too fast. It happens most often when coming up to stop lights. However, the most dangerous time (which caused me to get rear ended due to not being able to immediately speed up) is when I switch lanes on the highway. I let my car slow down by removing my foot from the pedal, switch lanes, and when I put my foot on the pedal, I don't speed up. Why?? because the engine shut off when I first removed my foot from the pedal and let the rpms drop!.