Oldsmobile 2003 Silhouette Owner's Manual page 390

To put the cover back on, line up the tabs on the right
of the cover with the slots in the cover opening. Push the
cover in place and push down the tab so that it rests
in the groove. This secures the cover in place.
B
Store the center cap or the plastic "bolt-on" wheel
covers until a full size tire is put back on the vehicle.
When you replace the compact spare with a full-size tire,
reinstall the bolt-on wheel covers or the center cap.
Tighten them "hand tight" over the wheel nuts, using the
folding wrench.
Storing the Flat Tire on a Front-Wheel
Drive Vehicle
Follow the procedure for storing a spare tire listed
previously.
A. Strap
9. Bag and Tools
C. Jack
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