GMC 1996 Sierra Owner's Manual page 240

The tools you'll be using include the jack (A), the jack
handle extension
(B),
the jack handle (C), the wheel
wrench (D) and the ratchet (E).
If the flat tire is on the rear of the vehicle, you'll need
the jack handle extension also.
Attach the jack handle (and
jack handle extension, if
needed) to the jack.
With the IJP marking on
the
ratchet facing you.
rotate the ratchet clockwise.
That will lift the jack head
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