2005 Chevrolet Colorado Owner's Manual - Page 340

For regular and extended cab vehicles, the jack and wheel blocks are located under the cover at the center of the vehicle behind the front seats. 2. 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. 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. You will use the jack handle extensions and the wheel wrench to remove the underbody-mounted spare tire. Regular/Extended Cab The vehicle will have a cover if it is an extended or regular cab. 1. Move the seats forward to access the cover. 5-72