Starts right up- dies immediately and security light is blinking

Check your security system. My info says you have passlock security system. Is there a security lamp that stays on when you try to start it? There is a relearn procedure, don't know if you have tried it? There could be other issues? Any applicable trouble codes?

you need your manual it tells how to reset security system or give dealer a call they should tell you

Your car starts and dies due to the failing antitheft system. Your vehicle is not receiving the "fuel enable" signal that it needs to keep running. So the injectors get turned to off to prevent theft. You will need to diagnose which part of the antitheft system is failing. Or bypass the entire security system. This link will help you understand the problem, and depending on the year of your vehicle, possibly a good bypass solution.

http://vatspasslockpasskeysecurityhelp.yolasite.com/

1. Attempt to start the car, let it stall, but DO NOT turn the key off! Leave it in RUN.
2. Wait 10 minutes or until the Theft System light glows steady instead of blinking.
3. Do not turn the key off, but start it immediately.
4. This should reset your Passlock system.

The other issue is that the BCM harness is known to corrode and will cause the passlock to fail and will lead to a no start. Check the BCM under the glove box, the bcm had somehow get's wet and the terminals corrode. Sand down all the corrosion that you could and put the bcm back into place and the car should started up fine and worked normally if done right. ONLY DO THIS IF YOUR SECURITY LIGHT STAYS SOLID AND DOES NOT RESET FROM THE ABOVE INSTRUCTIONS.

Thank you for using fixya and keep us posted.

to reset passlock system, Turn the engine two seconds then leave the key in the run position for exactly ten minutes...the anti-theft security light should go from blinking to solid at the ten minute mark. Immediatly run the engine and the Passlock is reset. Good Luck!!

Is the Security light flashing??? If so, the security system (passlock II) is ******** off the fuel because the car thinks it is being stolen. If the security light is flashing, leave the key in the "on" position for about 10 minutes and it will stop flashing. Then turn the car off and try to start like you normally would.

Is the security light blinking when it dies?

sounds like security system problem...to re-set, put key in ignition, turn to run, till security light stops flashing. turn off then start car. See if this helps!

If the car starts and dies right away you may have a pass key sensor fault.
Try to start the car,if the car dies right away just leave the key on and watch the security light in the insturment panel,if it begins to blink leave the key on until it stops blinking (apx 10 mins.) this will reprogram the pass lock to the pcm and may solve all your problems.if the car continues to die after running a min or so then you may have other faults,or if the car dies right after start the pass lock sensor may need to be replaced.

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Sounds like your Passlock security system went into the tamper mode. If your dashboard security light blinks when the ignition is turned on, your Passlock security system is disabling the injector module, preventing the car from start. Try this:
1- turn the ignition on and just touch the starter, without getting the motor to fire, then leave the ignition in the "on" position. The security light will blink for about 10 minutes. When the light stops blinking, turn the ignition off and leave off for 3 minutes.
2-repeat the step #1, 3 or 4 times. You will know that is fixed when you turn the ignition on and the security light does not blink, then the car will start. Make sure to stay inside the car when you're doing this, as opening the doors will trip the security tamper mode on again. Once the tamper mode is off, the car starts and opening the doors will not trip the Passlock tamper mode.