03 pontiac grnd am wont start. turns over. we get fuel. thin

03 pontiac grnd am wont start. turns over. we get fuel. think its security. unlocked doors with key. what now?

If the security light is flashing, then you may be able to reset it by leaving the ignition key in the run position without cranking till the light is on hard about ten minutes cycle the key off and back on repeat 1st step.cycle off again and attempt to crank it.it should start for now.but it'll act up again afterward on and you'll have to replace the passlock sensor

Look online for your security system most show wiring and how to bypass

Are you using your key with your capaceator if your not it will not start the car becuse the computer will not let it check you are fuses to see if they're all set also check to see if your geting spark on occasion you get fule you get no spark no start ya mean