Chevrolet 2008 Colorado Owner's Manual page 353

3. Remove the wheel blocks and the wheel block
retainer by turning the wing nut counterclockwise.
4. Put the wheel blocks at the front and rear of the tire
farthest away from the one being changed. That
would be the tire on the other side, at the opposite
end of the vehicle.
5. Locate the wing nut used to retain the storage bag
and tools which is under the front passenger's seat.
Remove it by turning the wing nut counterclockwise.
Use the jack handle extensions and the wheel wrench
to remove the underbody-mounted spare tire.
A. Jack Handle
Extensions
B. Jack
1. Assemble the wheel wrench (D) and the jack
handle extensions (A).
C. Extension Tool
D. Wheel Wrench
E. Wheel Blocks
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