Drivers side door will not open.

- Port Washington, WI, USA

I purchased a G.M. Chevy Cobalt lt. 2010 on Aug. 30. on clearance sales. And then I found that the car"S door ajar sensor does not work properly. All sensors of the doors didn't work until the door was opened over 5 inches. I visited a dealer shop, and asked to fix it. A sales person knew that all Cobalt lts have the same problem after checking other vehicles. Also, all technicians had not known the problem until my claim. After searching, a technician said to me ?it can?T fixed, usually other vehicles are installed two sensors each door, but the Cobalt has only one.? about 10 days later, service manager had tried to adjust all sensors and told me "it is fixed permanently." But 2 weeks later, driver's side sensor came out from the vehicle, from time to time the door ajar sign shows up on the dash board with ding! ding! sounds. Even though all doors are closed completely, it's a very funny car! I visited G.M. dealer shop again. They tried to replace the sensor, didn't, because I want to fix it the proper way, not a temporary nor tricky way. My wife and I drove on the highway while a rear door was ajar without any warning. Also sometimes my Sunday school kids have to use my car come to church. Therefore Cobalt"S problem is very serious for all our safety. Especially who lives with kids. I know that my mistake is buying a GM car, but I'm trying to minimize it. I know, G. M. Cobalt has another problem regarding power steering, also door ajar sensor has serious potential problem. Please investigate it carefully for safe driving.thank you.

- Duncan, 00, USA