There is no single fuse you can pull in a 1994 Cadillac DeVille to reliably disable the anti-theft system. The system is integrated into the car's electronics and removing a fuse could damage other systems or leave the car inoperable. Attempting to disable the anti-theft system by removing fuses is not recommended and may be illegal.
If you're having trouble with your car's anti-theft system, you should consult a qualified locksmith or Cadillac dealership. They have the proper tools and expertise to diagnose and resolve the issue without causing further damage.
