How to reset 2005 Chevy Trailblazer, so I can get the vehicle started?

what to do

New member
My door lock was not working on my driver side door. My husband removed the door paned fixed the door lock and then put it all back together and now the car won't start. Called the dealer and they said its in anti-theft mode. I just want my car to start. I have already tried unplugging the battery waited an hour before hooking it up again.
 
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