Jeep 2004 Grand Cherokee Owner's Manual page 240

240 WHAT TO DO IN EMERGENCIES
seatback or completely removed from the vehicle. It can
also be kneeled down upon and used as ground cover
to prevent clothing from getting soiled.
3. Remove the nut and tire.
To Replace the Spare Tire
1. Place the tire into the rear compartment with the
wheel facing upward:
a. Replace the hold-down nut.
b. Reinstall the cover by inserting the hinges through
the carpet into the brackets at about a 30 degree angle
and lower into position. Press down to lock the cover
in position.
2. Your vehicle is equipped with either a temporary-use
spare tire or a conventional spare tire. Maintain the
temporary-use spare tire pressure at 60 psi (420 kPa), and
the conventional spare at 33 psi (228 kPa).