Tom, your '05 is probably similar to our '06. Both seats have a black lever inset in the front just below the cushion, as Chuck notes. Pulling it disengages the pivot lock.
You may have to use the switches to skid forward or back, and use the side lever to tilt the back forward, to allow swinging room before the seat will rotate even 45 degrees; don't force anything. Also heed Mike's warning, as many of us have had to deal with control wiring binding underneath and the repairs aren't always easy. The wiring loom usually emanates through the floor under the back of the chair.
One word of caution, from personal negative experience: when done and returning the seats to normal driving position, be sure they are forward enough that the incoming slideouts clear the seat backs when you break camp. The upholstery is easily damaged. It may seem common sense, but it can be overlooked if it's taken for granted sometime afterwards that the seats are in their usual safe positions.
-Joel
