1996 Cadillac DeVille Owner's Manual - Page 253

4. Raise the vehicle by turning thejack handle far clockwise. Raise the vehicle enough off the fit ground for the spare tire to under thevehicle. 5. Remove all wheel nuts and take off the flat tire. 10.5 INCHES 5 8 INCHES . (150 mm) (270mm) 3. Position the jack under the vehicle and raise the jack in lift head until itfits firmly into the notch the vehicle's frame nearest theflat tire. Put the compact spare tire near you.