Chevrolet 1998 Express Van Owner's Manual page 231

Rear Position
4. Position jack under
the
vehicle
as shown.
CAUTION:
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.
A
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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