1998 Cadillac DeVille Owner's Manual - Page 282

Secure thetire with the retainer that was used to hold the compact sparein place. Store the cover as far forward as possible. Storing the Spare Tireand Tools I Storing a jack, a tire or other equipment in the passenger compartmentof the vehicle could cause injury. In a sudden stop or collision, loose equipment could strike someone. Store all these in the proper place. 5-33