Cadillac 2006 Escalade EXT Owner's Manual page 404

CAUTION:
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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.
4. Position the jack under the vehicle.
5-88
Front Position
Front Tire Flat: If the flat tire is on a front tire of
the vehicle, you will need to use the jack handle (C)
and only one jack handle extension (D). Attach the
wheel wrench to the jack handle extension.
Attach the jack handle to the jack. Position the jack
on the frame behind the flat tire where the frame
sections overlap.