How do you tell if your differential is going bad?

Signs that your differential may be failing include unusual noises such as grinding or clunking sounds when turning or accelerating, a noticeable vibration while driving, or fluid leaks beneath your vehicle. Additionally, if you experience difficulty in turning or your vehicle pulls to one side, it could indicate differential issues. If you notice any of these symptoms, it's important to have your vehicle inspected by a professional mechanic.