GE; Problem with my GE refrigerator

I will like to find out if there is anything i can do to rectify the problem with my general electric(GE) side by side refrigerator. the freezer stopped making ice, the fridge is not cooling, but i can still hear the sound of the fan. about three weeks ago the same thing happened and suddenly i found out that the fridge began to function properly and everything started to work. just four days ago the same problem occurred but this time the fridge refuse to pick up like it did last time is there any thing i can do to solve the problem please i need somebody to help me on what to do.