Please help diagnose this noise

[DeltaP]

What about the old gear oil. Was it shiny,full of metallics? wipe the inside of the diff case. Is there alot of metallic debris?

[joslinm]

Originally Posted by DeltaP

What about the old gear oil. Was it shiny,full of metallics? wipe the inside of the diff case. Is there alot of metallic debris?

there wasn't

[DeltaP]

If there wasn't any oil in it when you pulled the cover then you're back to post #3.

[joslinm]

Originally Posted by DeltaP

If there wasn't any oil in it when you pulled the cover then you're back to post #3.

everything looked fine. Found no metal or ground or chipped gears

[j cAT]

Originally Posted by joslinm

My 98 s-10 2WD 4 cyl with 135K miles has been making this grinding noise in the rear. Sounds exactly like grinding from really worn out brakes.

video 1 with wheels on https://www.youtube.com/watch?v=NzsD...ature=youtu.be
video 2 with drums off https://www.youtube.com/watch?v=TEST...ature=youtu.be

I can't tell where it's coming from. Both sides equal so I'm suspecting differential.
Shop looked at it and came up with bad U-joint and recommended differential service.
I fixed the u-joint. Fluid level ok in differential

I think the drums are dragging due to little slack in the park brake cable or the cable is binding. also remove the drum rust on the brake drum edge next to the outer edge.