How do i unlock a chevy cobalt radio?

To unlock a Chevy Cobalt radio, watch: https://www.Youtube.com/watch?v=SmWczBBeLJw You will come into issues with the sound. The source could be from the stereo's speakers or a phone that is connected to the vehicle. Whatever the source, You will have to have these issues solved quickly. If the issues are from the stereo's speakers, it might be static sounds, randomly turns off, a loose wire, or a blown fuse. If the nuisances are coming from the phone, it could be that the software won't update at all, the device won't sync with the vehicle, the phone's battery is near empty, or something is interfering with the signal.