So I started the process of programming my new 2005 Malibu key as described on this page. I went through 2 10 minutes cycles and everything was working correctly. The security light was turning off after 10 minutes and I thought I would soon have a working key, but then the battery died. So I had to charge my battery and now when I try to go through the process the security light is not turning off after 10 minutes. I thought that maybe the key was programmed now, but it still does not start the car. Well it will start it but only for a second and then it turns off. Do i need to reset the key somehow?
Try disconnecting the battery for a few minutes, reconnect, and try programming again. You might also have a faulty passlock sensor in your key's ignition lock cylinder that may need replacing.