Chevrolet 2010 Colorado Owner's Manual page 377

Store the tire under the rear of the vehicle in the spare
tire carrier.
1. Put the tire on the ground at the rear of the vehicle
with the valve stem pointed down.
2. Tilt the retainer downward and through the center
wheel opening. Make sure the retainer is fully
seated across the underside of the wheel.
3. Assemble the wheel wrench, the jack handle
extensions, and the jack handle as shown.
I n f o r ma t i o n P r o v i d e d b y : 6-97