Chevrolet 2003 Silverado 1500 Pickup Owner's Manual page 461

The equipment you'll need is behind the passenger's
seat. For Extended and Crew Cab@ models, the
equipment is under the passenger's side second
row seat.
1. If there is a cover, move the seats forward and turn
the wing nut on the cover counterclockwise to
remove it. For Crew Cab@ models, pull up
the second row seat with the loop at the base of
the seat cushion to access the tools.
2. The wheel blocks and the wheel block retainer can
be removed by turning the wing nut
counterclockwise.
3. To release the bottle jack from its holder, turn the
knob on the bottle jack counterclockwise to lower
the jack head.
4. There is also a wing nut used to retain the storage
bag and
tools.
To remove it, turn the wing nut
counterclockwise.
You'll use the jack handle and the wheel wrench to
remove the underbody-mounted spare tire.
A. Hoist Assembly
B. Wheel Wrench
C. Extensions
D. Hoist Shaft
E. Valve Stem,
F. Spare Tire
Pointed Down
G. Tire Retainer
H. Hoist Cable
I. Hoist Lock (If Equipped)
J. Hoist Shaft Access Hole
K. Hoist End
5-86