just got a 1999 Grand Prix GTP, drove it home it was fine, next day turn the key and it shuts off. had flashing red lisecurity light, read how to disarm the anti theft system,car started up. went to go to work the next day and turned the corner the car shut off but started right up. stopped at the atm and shut the car off, went back to start and same thingwouldnt start. got a ride to work went back to tow it and just for kicks tried to start it and it started right up, drove it home and havent driven it since. every where I read said it was a pass lock problem, my car thinks I am trying to stealit. could this be the issue? if so how do I fix this? I have not got to drive my car since I got 2 weeks ago UGGGGGG Help Please !!!