Chevrolet 1999 S10 Pickup Owner's Manual page 233

Follow this diagram to store the underbody
A. Wheel Wrench
B. Hoist Assembly
C. Retainer
D. Spring
E. Tire
-
mounted spare.
F. Valve Stem
(Pointed Down)
G. Lower
H. Raise
1. Put the tire on the ground at the rear of the vehicle,
with the valve stem pointed down and to the rear.
2. Pull the retainer through the wheel.
Note that with the ZR2 option, the spring and
retainer must be separated to insert through the
wheel opening.
3. Put the chisel end of the wheel wrench on an angle,
through the hole in the rear bumper and into the hoist
shaft. Turn the wheel wrench clockwise until the tire
is raised against the underside of the vehicle.
You will hear two "clicks" when the tire is secure,
but pull on the tire to make sure.
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