I have looked and looked and can not find a fill or a drain plug anywhere on my rear diff, its been leaking now for a few months and now its starting to make a little noise, can someone please help, I dont want to have to replace it, I have a 96 s-10 blazer

 

Rear Axle Service

 

There isn't a drain plug.

 

Yea you have 2 options.

A : remove cover,drain,replace with new gasket and refill.
B : buy a siphon pump and run a tube into the fill hole and drain out as much as you can and refill till it just starts to ooz out the fill hole. I dont like this method but 3 of my bolts are stripped/seized. So i gotta.

 

Done and done, noise gone and she still moves, thanks guys