* High-Pressure Hose: This hose carries pressurized fluid from the power steering pump to the steering gear. It's typically a thicker, more heavily reinforced hose and often has a metal fitting at each end. You'll find it running from the pump (located near the front of the engine) towards the steering rack (underneath the car near the front wheels). A portion will likely be visible in the engine bay but a significant portion will be under the car.
* Low-Pressure Hose (Return Hose): This hose carries the fluid back from the steering gear to the power steering fluid reservoir. It's generally a thinner hose. It also runs from near the steering rack back to the reservoir, often along the same general path as the high pressure hose, but separate. Again, part will be visible, part will be under the car.
To locate them accurately, you'll need to consult a repair manual specific to a 2000 Chevrolet Impala. A diagram in the manual will show the precise routing of the hoses. A visual inspection with the aid of that diagram is highly recommended. Trying to guess could lead to overlooking a damaged section or confusing it with another hose.
