Chevrolet 2004 Blazer Owner's Manual page 366

A. Spare or Flat Tire
B. Retainer
C. Nut
D. Wheel Carrier
E. Hook
5-90
Follow this diagram for the rear-mounted spare.
A. Wheel Carrier
B. Spare or Flat Tire
C. Wheel Nut and Locking Nut Cylinder (If Equipped)
6. Reinstall the locking wheel nut using the wheel
wrench. Then push the lock case onto the lug
nut until it stops. The key does not have to
be inserted into the lock. Push the lock case to be
sure it is secured. The special lug nut and lock
case is not intended to be used on any road wheel,
only on the spare wheel carrier. Tighten the nuts
on the wheel carrier to 22 to 32 lb-ft (30 to 40 N·m).