Cadillac 1996 DeVille Owner's Manual page 253

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