Vibration after Diff Fluid Change - Pls Help

[86Burban]

Originally Posted by Smier

I've always filled mine till it comes out the plug. Is it "whining" at all? Was the truck sitting level when you filled it? Pull the plug and stick your finger in, is it low? I did the same thing once and after driving a few miles I had a vibration and "whine" from the rear differential. I pulled the plug and I was low on fluid. I guess I didn't allow enough time for it to ooze everywhere it needed to. Topped her off and I was good to go. Other than that, check the ujoints for sure.
Posted via Mobile Device

Thanks...no whining that I can hear. The vibration has quited slightly but still there. I will re-check the fluid level (but did find in the owners manual where it did specifically state to fill to the drain plug level).