Car Stall problems of the 2008 Chevrolet Cobalt

I started my car in my driveway, it started and then stalled immediately and would not start at all. I diagnosed it along with my friend who is a certified mechanic. The cam chain guides broke at less than 79000 miles, causing slack in the cam chain which caused it to jump teeth on the intake cam, throwing it out of synchronization. This caused the intake valves to be open when the piston reached the top of its travel, which bent the valves. This is a very common issue on the 2. 2 engines, but very unusual for such a low mileage vehicle. The engine has a 100,000 mile warranty but only for 5 years. I only drive on average 10,000 miles a year. The engine is well below 100,000 miles and gm will not admit that they have a design flaw on these engines and will not make this repair for me under warranty.

My fuel pump was leaking, so we had the fuel pump replaced and now the air conditioning/heater/defrost systems no longer work. We've had to replace the steering column, the fuel injection, and a leaking front windshield twice. Also the fuel switch. Now the car somewhat stalls when trying to start.

The service traction light comes on and then the engine light. . . . . Shifts really hard and runs very rough and feels like it will stall. Very afraid. . . . Being told it is a cylinder misfire. . . I have read a lot about this on line and find numerous complaints related to this same issue in this same model. . . . Please help. . . I feel this is a safety matter. . . . Could stop in traffic or on expressway which I travel each day. Many thanks!.

The contact owns a 2008 Chevrolet Cobalt. The contact stated that while driving at an unknown speed, the vehicle stalled without warning. The contact stated that the vehicle started exhibiting this problem after being repaired under recall NHTSA campaign number: 14v047000 (air bags, electrical system). The vehicle was taken to the dealer. The technician was unable to diagnose the failure. The vehicle was not repaired. The failure mileage was 209,000.

The contact owns a 2008 Chevrolet Cobalt. The contact stated that while driving approximately 20 mph, the vehicle stalled without warning. The vehicle restarted and the failure recurred. The vehicle was taken to a dealer where the repairs were unknown. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 80,000. The VIN was not available.

The contact owns a 2008 Chevrolet Cobalt. While driving approximately 30 mph, the vehicle stalled without warning. As a result, the contact crashed the vehicle into a ditch. There were no injuries. The cause of the failure was not diagnosed, but an independent mechanic repaired the vehicle. The manufacturer was notified. The failure mileage was 139,812.

The contact owns a 2008 Chevrolet Cobalt. The contact stated that after starting the engine, the dashboard and headlights began to flicker before the vehicle suddenly stalled. The contact was later driving approximately 40 mph when the vehicle stalled without warning. The contact restarted the engine and the vehicle operated normally. The vehicle was not diagnosed or repaired. The manufacturer was notified and no solution was offered. The failure mileage was 90,000.

The contact owns a 2008 Chevrolet Cobalt. The contact stated that while driving approximately 15 mph, the vehicle suddenly stalled. The contact stated that after restarting the vehicle, the vehicle operated normally. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the defect. The contact also stated that while driving approximately 20 mph, the power steering sensor light illuminated as the power steering assist failed. The contact indicated that after shutting off and restarting the vehicle, the defect was corrected. The failure was intermittent. The vehicle was neither diagnosed nor repaired. The manufacturer was notified of the failure. The failure mileage was 97,000.

The contact owns a 2008 Chevrolet Cobalt. The contact stated while driving 70 mph the vehicle stalled. After several attempts, the contact was able to restart the vehicle. The dealer stated that they would not be able to duplicate the failure. The manufacturer was not made aware of the failure. The vehicle was not repaired. The failure and current mileage was 49,033.