1993 Cadillac DeVille Owner's Manual - Page 260

C W G I N G A FLAT TIRE If a tire goes flat, avoid further tire andwheel damage by driving slowlyto a level place. Turnon your hazard warning flasher. A 0 0 CAUTION: Changing a tire cancause an injury. The vehicle can slipoff the jack androll over you or otherpeople. You and they could be badly injured. Find a level place to change your tire. To help prevent the vehicle from moving: Put the shift lever in "P" (Park). Set the parking brake firmly. Turn off the engine. 0 To be even more sure the vehicle won't move, you can put chocks at the front and rear the tire farthestaway from the one being of changed. That would be the tireon the other side the vehicle, of at the opposite end. I The following steps will tell you how to use the jack and change a tire.