Hey, when I throw the old girl in 4wd the front end starts squeeking. I don't know exactly where it's comming from... but it sounds a lot like bad shocks, same pitch and that real quick hee-haw type noise, but I know it's not shocks. I don't think it's the t-case, but it could be. I just re-greased all the lubrication points on the front end, no luck. It ussualy doesn't make the noise when I am going in a straight line, but it does every once in a while, and it gets bad when I go to turn or downshift (keep in mind only in 4wd, no noises at all in 2wd). What could it be?