[merit4242]

i own a 98 lumina and i somtimes have the same problem with the security light if it is blinking the car will not start it is part of the pass key system if the light is blinking it is telling the starter and the fuel pump to shutdown so try going in your fuse box and removing the anti theft fuse for like 5 mins and then re install it that may help your problem and for it not wanting to turn over the other guys here are right if the harmonic balancer will not turn with a breaker bar then it is internal as for the cam shaft they are also right ...as i have snapped mine once already bad news is if that is the case and your freind kept driving it you might as well pull the engine and get a used one cause he would have made the camshaft journal spin and make the engine worthless Sorry