Pontiac Repair: 2002 pontiac grand am

Question
it will crank ,but it won't stay running

Answer
when it stalls does the security light either stay on or keep flashing? if so it has a pass lock problem. start the car turn off all the accy's off leave the key on for 120 minutes the lamp will either go out or stop flashing then turn the key off for 1 minute and they try to start it again. it should stay running if indeed it's a security sensor problem. good luck :-)