A noisy power steering pump can be caused by many things. Power steering pumps operate at very high pressure and should be serviced in accordance with the manufacturer's recommendations. A failing power steering pump can present various noises, from squealing to groaning. Also, you may experience steering that is stiff or slow to respond. If you're experiencing any of these symptoms, call Reno Vulcanizing Auto Care and Tires in Reno at 775-322-2141, or schedule an appointment online.