I have a 2001 Chevy Impala. My Security Light comes on, but it blinks it don't stay on. But it starts blinking from the time I start my Car until I shut it off. I haven't had any problem starting it and it doesn't die, it still runs good. I looked in my Owners Manual and it tells me it has something to do with my Security Passlock System which controls the Fuel to my motor. But as I said it still starts and Runs fine. Should I let it go or should I take it to a Mechanic? The owners manual doesn't state what could be some possible causes only that it involves the Passlock System.