Security light Saturn 2005. when you try to start the car my security light comes on and the car wont start. so i leave the security light flashing for about 10 min. and the light goes off i do this ritual 3 times finally about the 4th time the security light stays on and the car starts. Can I deactivate the security alarm? Help

If your security light is flashing leave the key in the on pos for 10 min and the light should stop flashing . when it does your car will start

put the key in turn to run leave it that way for 10 min then try to start this works most times

leave the key forward so dash lights are on for 10 min and then it should reset the security system and start up

Hello: Try this, Turn key on, try to start, let k/switch come back to run, let set for 10min(security light out) turn key off 10sec, turnkey back on let set 10min, turn key off 10 sec, turn key on let set 10min. turn key off 10sec. turn key on start car if it doesn't start and the security light is flashing you have a passlock problem and it will require a new lock cylinder assembly and the above learn procedure.

Hello: Will try to give you instructions: Attempt to start car, leave key on (security light flashing) let set for 10 minutes, After 10 minutes security light out. Turn key off for ten seconds, turn key on, let set for 10 minutes, turn key off for 10 seconds. turn key back on let set 10 minutes, turn key off for ten seconds, the engine should now start and stay running.

Leave the key in the on position for 10 minutes until the security light stops flashing. Turn the key off and wait 5 sec. If it starts and dies, leave the key on for 10 min. again. You might have to leave the key on 3 times. While you are doing this have a battery charger on it. If the battery goes dead. (You might have the key on for 30 min if you have to do it 3 times the battery might get low) you will have to start all over.

Sorry the saturn's do not have a inertia switch. But more information would help. Like does the security light activate on the dash, you may have a bad Passlock, Place the ignition key to the on possition for 10 min and then try starting it. 
Good luck and let me know how things are going. There should be instructions in your manual on how to get the car started if the Passlock is giving you problem.

the anti theft thing will come on and prevent starting for a while if it believes it is attempting to be stolen. even something silly like someone bumping it could possibly cause that. now if it does it at your house in a locked garage or something...

With the new lock cylinder in it, turn the key on. The security light should blink. Leave the key on for 10 minutes, the security light will quit blinking and go out after 10 min. This will reprogram your security system and the car should start. Also leave a battery charger on it while the key is on, If the battery goes dead during the 10 minute reprogram sequence, you will have to start over again.

turn the key on and try to start the engine it should start than stall, leave the ignition on for approx 10 min the security light will flash when it stops flashing turn the car off and then repeat this procedure after the third try the theft system will attempt to relearn the security data, if it is valid it will then start if not you will nee someone with a tech 2 scanner (gm shop) to help you out