The symptoms of a rotator cuff tear include: 1  Pain in the shoulder and arm, which varies depending on how serious the tear is. 2  Weakness and tenderness in the shoulder. 3  Difficulty moving the shoulder, especially when trying to lift your arm above your head. 4  Snapping or crackling sounds when moving the shoulder.o diagnose a rotator cuff tear, your doctor will give you a thorough physical exam. He or she will want you to move your arm in different directions to see what causes pain. In addition, your doctor might want to order the following tests: 1  X-ray of the shoulder with some special views.