Kenmore Refrigerator making loud sounds at... For almost 3 months my 10 yr old Kenmore

Question

For almost 3 months my 10 yr old Kenmore refrigerator has been making a loud sound like "2 knocks" when the compressor shuts down.Other than that, the fridge and freezer seem to run fine.We are upgrading the fridge and would like to give this one toa neighbor. Of course, we don't want to give them a fridge that isgoing to die soon. Any advice would be appreciated!