Replaced ignition now car starts n dies even if giving gas.

What is your question?

I lost the key to car and got new ignition switch. I did the whole turn key to on for 10 min off for 10 sec and repeat. Now it will start but the anti theft light stays on now and causes car to dies within 3 seconds. What can I do?

How long has your 2005 Pontiac G6 had this problem?

Since changed ignition