Passkey II problem !!
 

hi to all !
I'm French and I'm sorry for my English ! I come to this forum because there is not in France. I have a Cadillac Eldorado Seville SLS Northstar and 1996.
My Eldorado fails to start over and the message is Starting disabled due to theft system remove ignition key... resistance key is detected... security indicator does not light... how to repair ??
thank you very much in advance:)