Pontiac 1999 Montana Owner's Manual page 177

Accessory Inflator System (Option)
Your vehicle may be equipped with 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.
The air inflator kit is stored in the glove box or in the
rear saddlebag, if your vehicle has this option. 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.
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