I just bought 2002 alero and tried to start did not get keys withthe car everything comes on but starter will not engage i think its the security system ??? what do i need to do after i purchase a new ignition how do i reset the ant-theft on the car ?

look for security light when you turn on key if it lights and doesn't go off leave key on for ten minutes then turn key off and then try to start

Does the car have a factory security system? it may have a starter kill on it.
also check for voltage at the starter solenoid while someone holds the key to start position, you could have a faulty ignition switch.
the engine light stays on when the key is on until engine starts.

Hello: If the security lamp is NOT flashing then have some one hold the key in the start position and tap/hit the starter with a hammer it may start. If the starter does not respond to hitting it then take a test light and when the key is in the start position see if the test light comes on when you touch the small wire (purple) at the starter solenoid, remember to have someone hold the key in the start position when you do the test light test. If you have no voltage at the starter solenoid and the security light is flashing the you probably have a pass-lock security problem and you really need a scanner to interrogate the system to determine what component is giving the problem.

i just bought a 2004 alero...a guy who owns a 2002 told my ..if the security light flashes...turn car off..then turn key ahead till the security light goes solid....should start

Try replacing the ignition module...

you might have to get another key from your dealership.each key is designed with a chip inside it to prevent the anti theft.

The security system is activated. It kills the injector pulse ( signal) and on some modles the starter. You will need to try to relearn the system. First try to start the car, leave the key in the run position for 10 minutes. Cycle the key off, then cycle it to the run position again for 10 more minutes. Cycle it off again, then back to run for another 10 min. after the last cycle turn it off then try to start the car. It is a 30 minute relearn. If this does not work you will need a repair shop to replace the passlock sensor. Good Luck

if your security light stays on, its has a lock out device try this, turn key to on postion dont turn over just turn to on pos and wait 10 min now turn back off and try to start

I have this problem all too often myself. Pop the hood, check to make sure the wires have not come undone. If they are on there securely, try and jump the battery if you have that option. Once jumped, it will give the battery more juice and you should be good to go. Please rate FixYa!

Hi, I just read somewhere on the WWW that the crank sensor and or fuse can be a issue. I too have a 2002 Alero.. Worst car I have ever owned!