Just a little update. It appears the whining noise is almost gone now. Getting the rack to fully bleed is a major pain. Before putting the pulley on the PS Pump, make sure to spin by hand. I used a screwdriver in one of the bolt holes and hand-cranked to get fluid in the system. Also, turn the wheels to lock and then spin the pump again, and then you can put the pulley on, and start the bleed procedure again. Took a week for it to fully bleed for me.

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2011 BMW X5 XDrive35i 40k Miles