Chevrolet 1998 Lumina Owner's Manual page 230

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1
Getting under a vehicle when it is jacked up is
dangerous. If the vehicle slips off the jack, you
could be badly injured or killed. Never get under
a vehicle when it is supported only by a jack.
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CAUTION:
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.
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4. Raise the vehicle by turning the jack handle to the
right. Raise the vehicle far enough off the ground for
the spare tire to fit under the vehicle.
5. Remove all wheel nuts and take off the flat tire.