differential making sound

[Fito_fx4]

My rear differential star making some noise change the oil and still making the sound whats its better change the all differential or just the pieces on the center its a fx4 2005

[deeds98f150]

Theres no reason to replace the housing the internals are all you need and you prob dont need all of them maybe just a bearing or spline i dunno what it sounds like but if your asking that kind of question dont attempt it yourself no offense to you but diffs are a little complicated

[Fito_fx4]

Its fine tanks lot for.the coment