gm passlock 2 disablement

Our 2000 impala will start, but immediately die. If I wire in a toggle switch between the passlock and bcm, can the vehicle be started with the switch open ( security system off?)

I believe the circuit has to be opened when the car is running. Read the post below.
http://www.automotiveforums.com/vbulletin/showthread.php?t=454520

u can also read my post on what I did and the reply I got with the link in it
http://www.automotiveforums.com/vbulletin/showthread.php?t=705930