GMC 1996 Sierra Owner's Manual page 64

Your vehicle has one
double-sided key for the
ignition and all door locks.
If you ever lose your keys, your dealer will be able to
assist you with obtaining new
ones.
NOTICE:
Your vehicle has a number of new features that
can help prevent theft. But you can have a lot of
.
trouble getting into your vehicle if you ever lock
your key inside. You may even have to damage
your vehicle to get in. So be sure you have an
extra key.
Tailgate
You
can open the tailgate by lifting up on its handle
while pulling t.he tailgate toward you.
To shut the tailgate, firmly push it away from you into
the latch.
When you put the tailgate back up, pull it back towara
you, to be sure that it latches securely.
Tailgate Removal
The tailgate on your vehicle can be removed to allow
for different loading situations. Although the tailgate
can be removed without assistance, you may want
someone to assist you with the removal to avoid
possible finish damage.
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