rearend noise on 2008 Lexus GX470

I have a 2008 GX470 and hear a high pitch(whine)that seems to be coming from the rearend when on the highway from about 50 MPH up. You hear this when the car is pulling and quits when coasting. Wondering if anyone else has had this problem.

Asked by for the 2008 Lexus GX470
I have seen tires cause this but a more common issue is war in the rear axle housing. Greg
1 more answer
why wait, see dealer