Chevrolet 2002 Astro Owner's Manual page 247

Your compact spare tire is stored underneath the rear of
your vehicle. You will use the ratchet and extension to
lower the compact spare tire.
5-20
4. Attach the ratchet, with the DOWN side facing you,
to the extension. The extension has a socket end and
a flat chisel end.
The ratchet has an UP side.
It also has a DOWN side.