1994 Chevrolet Astro Owner's Manual - Page 215

Storing The Jack and Spare Tire Put the tire on the ground at the rear of the vehicle, with the valve stem pointed down. Pull the retaining bar through the center of the wheel, makingsure it is properly attached. Attach the ratchet, with the UP side facing you, to the extension. Put the flat end of the extension on an angle through the hole in the rear door frame, above the bumper. Turn theratchet to the right until the tire is against the underside of the vehicle. You will hear two"c1icks" when thetire is all the way. Try to move thetire with your handsto make sure it is securely in place. Return the jack, ratchet, extension and wheel blocksto the proper location in the rear storage area. Replace all bolts, retainers and wing nuts in the proper location. Secure the jacking equipment in itsproper location and replace the jack storage cover.