95 Explorer 4x4 not engaging

I have a 95 Explorer Sport. The button on the dash clicks but the 4 wheel drive is not engaging. The anti-lock brakes are pulsating on their own sometimes too. I am not sure if this is related since it could be the GEM? Can anyone help?

I might help if you put this in the right forum. Your in a Mustang forum.

Sorry. Will correct.

HiFlow will move it.