How can i bypass security on my 95 grand prix to get it to start

You'd need to put a resistor between the leads to the ignition tumbler. I've seen online instructions for that, but can't remember where....you need the correct resistor though as that's what triggers the security module. Have you tried re-setting it by leaving the key on for about 15 minutes (turn to on and off three times, leaving it on the third time) I put a jumper battery on it while doing that so it does not kill the battery. You'd need to put a resistor between the leads to the ignition tumbler. I've seen online instructions for that, but can't remember where....you need the correct resistor though as that's what triggers the security module. Have you tried re-setting it by leaving the key on for about 15 minutes (turn to on and off three times, leaving it on the third time) I put a jumper battery on it while doing that so it does not kill the battery.

my tumbler is destroyed using a screw driver to turn ignition to start car my tumbler is destroyed using a screw driver to turn ignition to start car