Groaning noise during low-speed turns

[Dennis75]

Groan

Yup, my 07 has the same rear end groan at low speed turns. I bought it with 750 miles on it 2 years ago, now it has 4500 miles on it. It made that noise from the day I bought it. Nature of the beast and Im not worried about it.

 

[Blacksmoke]

There is a TSB out on this.
I had the same problem.

They added Motorcraft friction modifier liquid to my rear end and the problem was solved.
After you get it done take her out and do slow speed circles in both directions for about 7-10 min. to get the modifier well mixed in.

 

[Bonefish]

I had it in my 09 and now in the 11. It is in the rear no question. I'll get modifier added when I go in next time......