Have a side by side ge that overflows into the ice maker freezing the ice and it will leak so bad it will have water on floor.
What do I need to check?

Could be the water inlet valve sticking open or leaking. It is usually located on the back of the refer box. You will see a 1/4 inch copper or plastic tube leading to it from a water source. There will also be a water shut off valve located somewhere on your plumbing pipes to turn it off with so you can replace the valve.