1996 Buick Roadmaster Owner's Manual - Page 210

Removing the Spare Tireand Tools To access the equipment in your wagon, turnthe slotted release button located the on rear edge of the cover. After you have changed the tire and have replaced flat the equipment,be sure to alignthe slotted release button and turn it to secure the trim panel. Remove the cover by pulling it away from the window and then sliding it toward rear, lifting it up. andout the of the lowertrack. The-wagontire changing, equipment can now be removed. The equipment you'll need is inthe trunk if you have a sedan. Turnthe wing nut on the screw counterclockwise to removeit. Remove the wheel wrench,spare tire and the jack from the trunk. The equipment for the wagonis in the rear storage compartment.