I resently was told by Toyota that the noise was from my 3rd member and it needed to replaced. I went and got a 2nd opinion and was told it doesn't need to be replaced. What are some things that could cause a high pitch noise from the rear. It isn't always there and I hear it above 30mph. I have a 98 Tacoma SR5 TRD.

Thanks for any help.

 

Well is it pretty loud?

I have some noise on mine, don't know what it is though.

 

No its not loud at all.

 

Checked? Drained & Replaced fluid? Recently?

 

Sounds like you are experienceing the same problem as me.

I had just replaced my diff fluids with 80w90 valvoline.

I was told possibly u-joint

 

Yes, Toyota did it while locating the noise. I was thinking of changing the fluid with Amsoil severe gear 75w90