Refrigerator buzzing. I have a maytag refrigerator, about 4 years old. It started buzzing a good

Question

I have a maytag refrigerator, about 4 years old. It started buzzing a good bit lately. It does it when it's trying to kick on. It doesn't do it every time, sometimes it starts just fine. But when it does do it, it may do it any where from 2 to 5 times before it will kick on. I was wondering if you could help me decide what the problem is, so that I can get the right part to fix it.

Thanks.