what is the problem when 2007 cadillac escalade wont shut off. on 2007 Cadillac Escalade

the problem occurs after i put it in park and take key out , the truck wont shut off then the check engine light comes on!!!

Asked by for the 2007 Cadillac Escalade
scan codes and post so we can adv
2 more answers
what codes?
Just had the same problem with my 2007 Escalade EXT. I was told that my ignition modules are bad. Having both replaced now and due to this replacement you must have new keys programed. It's running me around $800 through a personal mechanic.