1993 Cadillac DeVille Owner's Manual - Page 262

- Attach the wheel wrench to the jack bolt and rotate it clockwise (to theright). Thatwill raise the lift head a little. If your vehicle has a wire wheel cover or an aluminum wheel, read the part thatdescribes your wheel. Aluminum Wheels Use the flat end of the wheel wrench. Insert into the small slot on the wheel and gently remove the center cover. Be careful not to drop thecover on the ground,you could scratch it. Now see "Jacking and Removing Flat Tire."