What Fuse to REMOVE so truck won't start.

I am going on vacation and I want to remove a fuse in case some thief tries to take my truck. I don't want to remove the car batteries because it will erase all my setting(radio, etc.) What Fuse can I remove from my 3500 Durmax that will not allow it to start? :banghead:
Thanks for you time

Remove the ECM B fuse from the underhood fuse box...this controls the fuel pump relay and power to the PCM

You can also remove the airbag fuse