95 Rear drive train CHIRPING noise

[marragtop]

I have a 95 XLT 4x4 with 195k on it. I suspect the drive train is all original. I have a 'chirping' noise when the truck is moving. It does it in and out of neutral. I jacked the rear up and put it in drive and the chirp is still there, so I assume it's rear wheel or drive shaft related (not front wheel related). I don't see any grease fittings on the Ujoints.... is this correct? Also, there is no fluid/grease on the rear backing plates, so I assume my rear axle seals are good. Also, it has disc rear brakes.

Does anyone have any ideas how to better isolate the problem?

 

[IZwack]

Hello neighbor.

You're on the right track -- chirping (almost sounds like a bird) is usually attributed to a failing U-joint.