Recently my 99 4x4 long wheel base truck has developed a low speed vibration when turning. Ideas? Rear diff was serviced less than 6k miles ago. Does not have limited slip.

 

Bearing going bad? Hear any odd noises? Lug nuts tight?

 

I replaced outer axle bearings last summer. I've only put a few thousand miles on since. There is a moan or groan but its not loud and both the vibration and sound are intermittent and only at low speed while turning.

 

Check u-joints on front axle and all driveshafts. Had the same problem - all the needles had fallen out of my front axle ujoints (factory with 125K+mi on them).

 

Thanks for the tip. I crawled around and looked and the center support bearing looks pretty dry and I don't see a way to grease it or the U-joints so I'm wondering if it's time for replacement anyway. I was also wondering about the slip joint in the rear shaft.

 

http://dodgeram.org/tech/Quiz/axle_noise.html

Get an angle finder and check your pinion angle and angle off the tcase.

Check your ubolts to see if loosened up. Need to be 120 ft-lbs.