Power steering isnt working

i have a 93 deville with 90k miles. my power steering doesnt seem to be working. it has enough fluid but it just stops working all the time. is it the filter? if so, where can i get a good deal on one, and how do i change it??

thanks

well are you sure you have no leaks ? and how long has this been going on ?

you dont have a filter for that car on the pump..

check to make sure you have no leaks and chances are your pump went out..

approx $80.00 for new one..