Install a ELECTRIC POWER ASSIST SYSTEM on a 2007 chevy cobalt

SOURCE: 2006 chevy cobalt woulnt start lock light is on

Are you using the original key that came with the car? The chip in that key may have gone bad. Try using the spare key that should have come with the purchase of the car. You may also be having battery issues. If all else fails....call the people who really know how to rape you...DUM Dum dummmmm....the dealer

SOURCE: my 2005 chevy cobalt factory radio is locked

There are only 2 things you can try to fix this yourself: turn off the engine and open the driver side door (to turn the radio off). Wait 5 minutes, start your car.
If that does not solve it, turn off your engine, disconnect the car battery, wait about 5 minutes. Reconnect the battery (negative pole first - black connector) and try your radio again.

If neither one of these two fix your problem, I am afraid only a GM service center or dealership can fix the problem. The Cobalt is notorious for all kinds of electrical issues.

Thanks for using the fixya forums!

SOURCE: 2007 Chevy Cobalt driver side power window will not roll down

The most likely cause is that the window motor has gone out. Is the car still under warranty? One way to check the motor is to turn the ignition on, don't start the engine, then try to operate the window while watching the dome lamp. If the lamp dims when you activate the switch, it is most likely the window motor. If not then next likely cuplprit would be the switch.

SOURCE: 2005 chevy cobalt, car wont start ... check

disconecting the battery should reset the pcm. but you will need to find out what caused the problems.

SOURCE: Key won't turn in 2008 Chevy Cobalt. Tried moving

now what it sounds like is the key has a sensor built in it the keys cost around 60.00$ but this is most likely what is wrong. the sensor is a security feature with the car if the light glows while trying to turn the car then this your problem :)