Oldsmobile 2001 Silhouette Owner's Manual page 166

Accessory Inflator System (Option)
Your vehicle may have an air inflator. With it, you
can inflate things like air mattresses and basketballs,
and you can also use it to bring your tires up to the
proper pressure.
The air inflator is located in the rear compartment on the
driver's side. To remove the cover, pull the tab on the
cover and pull it off.
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The air inflator kit is stored in the glove box. It includes
-
a 20 foot (6 m) hose with an air pressure gage and
nozzle adapters.
CAUTION:
Inflating something too much can make it
explode, and you or others could be injured. Be
sure to read the inflator instructions, and inflate
any object only to its recommended pressure.