i ask if works cause that typically don't. if it dosent work then id say pull it and junk it as you really don't need it with an auto. as mention a hand brake would allow you to run cable through trans tunnel to rear and take up space in center. if you are wanting to keep it for whatever reason people do then pull it and soak it in a bucket of pbblaster mix to free it up, cable that is. do your floor work then reinstall.
i personally never used it offroading or anywhere and have long since pulled it and lost the 6.8 lbs of unneeded weight. i can now go .0013 mph faster and have never looked back.
now don't get me wrong a parking brake is a good back up for steep hills and like power braking donuts and what not. and not sure about you and your state inspections as may require one, mi dosent care. prolly cause they all rust out anyways. so your rig, your call. but it would be nice to have if you had a ax15 in it.