Hello, bleeding air from the power steering pump can be very difficult. look at the power steering fluid in the pump, if it has a foam like appearance, or small bubbles. it still has air in the system. make take several attempts to get air from system. if after several attempts, you cant get the air out. you may have to remove the pump and inspect the o-ring between the pump and the resivor tank. i have seen alot of these o-rings get cut during pump replacements.
Power Steering System Bleeding
Important: Power steering fluid level must be maintained throughout bleed procedure.
Important: With hydro-boost only, the oil level will appear falsely high if the hydro-boost accumulator is not fully charged. Do not apply the brake pedal with the engine OFF. This will discharge the hydro-boost accumulator.
Vehicles equipped with hydro-boost systems or longer length power steering hoses may require turns up to 15 to 20 stop to stops.