Did you check the wires going into the freezer door yet for any cut wires? Lots of members have found frayed and broken wires causing the ice maker/and or auger motor to be dead. Remove your bottom kickplate grille, Remove the black wire harness loom too, broken wires can be underneath it.
Ok so out of the blue, about 4 hours after my last post, it started working! It dumped ice out and refilled. I have no idea why it might have done that. I wonder if it got cold enough again after I had it open for a while earlier in the day? But either way, thanks for your help!