Chevrolet 2004 Express Van Owner's Manual page 332

1. Check under the vehicle to see if the cable end is
visible.
2. If the cable is not visible, start this procedure at
Step 6.
3. Turn the wrench counterclockwise until
approximately 6 inches (15 cm) of cable is exposed.
5-82
4. Connect the jack handle (C) and jack handle
extension (B) together and press the retention
clip (arrow) so it engages.
5. Attach the jack handle/jack handle extension to the
jack and slide the ratchet with the UP mark facing
you onto the end of the jack handle extension
so your set-up looks like the picture above.