Chevrolet 1996 Tahoe Owner's Manual page 242

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.
NOTICE:
Raising your vehicle with the jack improperly
positioned will damage the vehicle or may allow
the vehicle to fall off the jack. Be sure to fit the
jack lift head into the proper location before
raising your vehicle.
Front Position
Rear Position
Front
Position
Rear
Position
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