GE SxS refrigerators have what are called ride-ups. One half of this assembly is riveted to the door hinge the other half is screwed to the bottom of the door. It is usually best to replace both parts at the same time. Both fridge and freezer doors have this type of a ride-up.

Remove power, remove the upper hinge cover. Remove the upper hinge screws ( if the freezer door - disconnect the water line ), lift the door off the lower hinge and lay it down on the floor. The parts can be easily replaced now. See the picture below to see what the parts look like ( freezer hinge shown in the picture )....