1993 Cadillac DeVille Owner's Manual - Page 264

...1 end omer - Use the of the wire wheel wrench like this. Remove the special anti-theft wheel nut by turning it counterclockwise. Remove the wheel disc. Jacking and Removing Flat Tire Using the whee-lwrench, loosen all the wheel nuts. Don't remove them, yet. Your Cadillac has a notch on the frame near eachof the wheels. Fit the lift e head into thenotch 1 nearest the wheel with the flat tire. - The jack handle hasmarkings at 8" for the rear and for the front lo" to use which will help you to locate the jacking notches in the frame.