I have just done the "Resistor" method of disabling the passlock on my 2003 Grand Am.
I used a 2.2k 1/4 watt resistor (DIDN'T check the resistance of the passlock and try and match it with a resistor), installed as describe on forums, (yellow wire from BCM to resistor then spliced onto black wire from BCM) then did the reset code thing (10 min with ign to ON).
It worked! now no passlock problems OR warning light.
I had same problem with a 1996 monte carlo with the VATS type security (one with a "pellet" in the key). That took a very long time to disable compared to this fix.
Justin