Replaced both inlet valves, no joy. Upon further inspection, found ice maker harness extremely tight at lower freezer door hinge, clamped in place right at a pivot point. Essentially the harness is held in place and rotates with the door. 6 wires broken inside. Splice repair and ice maker now works. Most likely will have to replace harness eventually. Unless there is more slack inside the freezer door this will probably happen again. Very poor design.