I'm no expert on this but I'll give you some maybe's - fluid low? You have to use Power steering fuid especially for the Crossfire available from your dealership. Its 20$ a pint.
You may have some air in your line's. My son told me that if you unlock the ignition, turn the wheels lock to lock 3 or 4 times without the engine on and then check the fluid that would remove any air in the line. Not sure if this is hot air but my car was making a racket over the weekend do to me changing the pwoer steering line (CAI) and the system was low. I did the wheel trick after putting in the CHF11 and no more noisie and its nice and smooth.
Hope these work for you.