2003 Buick LeSabre Owner's Manual - Page 329

Storing the Flat Tire and Tools Store the flat tire as far forward in the trunk as possible. Store the jack and wheel wrench in their compartment in the trunk. I Sto...dg a jack, a tire or other equipment in the f passenger compartment o the vehicle could cause injury. In a sudden stop or collision, loose equipment could strike someone. Store all these in the proper place. After you've put the compact spare tire on your vehicle, you'll need to store the flat tire in your trunk. Use the following procedure to secure the flat tire in the trunk. 5-78