I greased the entire front end about 15k miles ago. I guess it wouldn't hurt to do it again. I found that my PS fluid tank was about dry. Damn steering box is leaking so hopefully it didn't mess anything up by running it out of fluid. Luckily the pump insult whining
It may be your box squeaking then. I had one that was clicking that finally gave up as i was pulling into the shop. It was no fun trying to get a truck on 37s into the bay with no steering at all.