Chevrolet 1997 Astro Owner's Manual page 248

Raising your vehicle with the jack improperly
positioned can damage the vehicle and even make
the vehicle fall. To help avoid personal injury and
vehicle damage, be sure to fit the jack lift head into
the proper location before raising the vehicle.
~ ~ ~ ~~~~~~~~ ~~ ~ ~ ~
Do not jack up the vehicle with people in or near
the vehicle.
7. Raise the vehicle by rotating the ratchet clockwise.
Make sure the UP mark faces you. Raise the vehicle
far enough off the ground so there is enough room
for the spare tire to fit.
8. Remove all the wheel nuts and take off the flat tire.
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