On my '96, They clip onto brackets at the top and are held by quick fasteners at the bottom..
There are a couple screws at the bottom front and rear caps that unscrew from the inside of the body flange. Once you get the end caps off, pry the centers out of the little rectangular plugs at the bottom of the long center cover. They act like the center plug of a pop rivet. Then you can pry the retainer out. Once you release the retainers at the bottom, they just lift off the bracket at the top.