2004 Chevrolet Colorado Owner's Manual - Page 346

2. Move the seats forward and turn the wing nut on the cover counterclockwise to remove it. For crew cab models, reach under the rear seat to access the jack and wheel blocks. To reinstall the jack and wheel block assembly in the mounting bracket, insert the tabs into the jack base by pushing the blocks up into the assembly. The outer hole in the jack base aligns with the tab on the bracket. When reinstalling, make sure the jack is secure, but do not overtighten the jack in the bracket. 3. The wheel blocks and the wheel block retainer can be removed by turning the wing nut counterclockwise. 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. 4. There is also a wing nut used to retain the storage bag and tools located under the front passenger's seat. To remove it, turn the wing nut counterclockwise. You will use the jack handle extensions and the wheel wrench to remove the underbody-mounted spare tire. A. Jack Handle Extensions B. Bottle Jack C. Extension Tool D. Wheel Wrench E. Wheel Blocks 1. Assemble the wheel wrench (D) and the jack handle extensions (A) as shown. 5-76