on a 96 9k. the central locks will sometimes not go up or down from the switch or the outside. it still seems like it has power though because when it is not working and i try to unlock it, (unlocked or locked) it will make the sound like the doors are already unlocked. this does not happen all the time. sometimes if push the switch a bunch of times it will work again or sometimes it just works fine. 2nd, this may be the source of the issue idk, the drivers side lock tab (the black thing that you push down to lock the car) is really easy to pull up and down. almost like its not connected to anything, but i checked and it is. the others feel like they are normal, but the drivers side feels really easy to push up and down. also when i put the key in the drivers side door and turn it to lock or unlock, there is no spring back to original position like the passenger side door. 3rd, ill be getting a remote programed for the doors, do you think the car will still not unlock or lock sometimes from the remote? advice would be helpful. here is a vid to help http://s172.photobucket.com/albums/w8/kvnalb/?action=view¤t=100_0370.mp4 incase you cant hear the sound at the end of me hitting the unlock switch and it making a sound, the sound is the same as if all the doors were on locked and you pressed the unlocked button.