The transporting of the hydraulic fluid from the steering box back to the reservoir in the power steering pump is accomplished through the Pontiac Power Steering Return Line Hose. This is the low pressure section of the power steering system.
Because the Pontiac power steering return line hose is on the low pressure side of the system, when it has a breach in its containment of the hydraulic fluid, it will not be immediately be noticed by the driver of the vehicle. The negative effects of losing the hydraulic fluid will not be noticed until the reservoir in the power steering pump is depleted.
For the owner of the Pontiac to locate a breach in the power steering return line hose is not the same as on the pressure side. Because the pressure is so low, the leak will only be a dribble and not a fountain. Because of this if you cannot located a leak in the power steering return line hose and still suspect it is the source of the hydraulic fluid puddle under your vehicle, then the entire hose should be cleaned. Once cleaned the power steering return line hose should be covered with baby power. With the Pontiac engine running another inspection should occur. Where ever the baby powder is wet, is the hydraulic fluid leak.
Once the new power steering return line hose is in place the reservoir in the power steering pump should be filled up again. Only if the reservoir was allowed to be depleted of fluid does the power steering system need to be bled of air. Then your Pontiac is ready to return to service and safe to drive on the road again.