Child Security Locks - GMC YUKON DENALI 1999 Owner's Manual

On vehicles with panel doors, if the power lock switch is
pressed with the panel doors open, all of the doors will
lock three seconds after the panel doors are closed. If the
panel doors are closed, the vehicle doors will lock when
a power door lock switch is pressed. The theft
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system will not re arm after the panel doors are closed
unless the power lock switch is pressed first.
On the passenger side of the
rear panel door or tailgate,
there is a power lock switch
which can be used to lock or
unlock all of the doors.
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deterrent

Child Security Locks

Move the button up to engage the security feature.
Move the button down to return the door locks to
normal operation.
See "Feature Customization" in the Index for further
information on turning this feature on and off.
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With this feature, you can
lock the rear side doors so
they can't be opened from
the inside by passengers.
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