Pontiac Grand Prix 2007 Owner's Manual page 440

8. Make sure there is a proper connection
between the tire valve stem and the air
compressor hose by looking at the air
pressure gage. If there is not a pressure
reading while the compressor is running,
the connection between the inflator kit and
the tire is bad.
Check the attachment between the air
compressor hose and the tire valve stem.
9. Inflate the tire up to the recommended inflation
pressure using the air pressure gage on the
top of the unit as a guide.
10. Turn off the air compressor by moving the
switch to the O (off) position.
440
CAUTION:
{
Storing the tire inflator kit or other
equipment in the passenger compartment
of the vehicle could cause injury. In a
sudden stop or collision, loose equipment
could strike someone. Store the tire
inflator kit in the proper place.
11. Disconnect the compressor inflator hose and
wrap the hose in the bottom of the inflator kit.
12. Place the equipment in the original location in
the trunk of your vehicle.