Many trucks and older cars use hydraulic power steering: a belt-driven pump pushes fluid to the steering gear or rack. When the fluid gets low from a leak, the pump whines, especially when you turn the wheel at a stop. Let it run low long enough and the pump wears out, and the steering gets heavy. Leaks usually come from a hose, the pump's seal or the rack's seals, and a slipping belt can cause the same groan.
Many newer cars use electric power steering instead, with a motor on the column or the rack. There's no fluid, so problems show up as a warning light and suddenly heavy steering, and they take a scan tool to diagnose. Either way, we find the cause, whether that's a hose, a pump, a rack or an electric assist fault, and show you before replacing anything. For power steering repair near you, bring it to any C&C shop.