Originally Posted by brg468
Just an update, went to a different dealer and they tried putting an anti-binding agent in the rear diff fluid and told me to drive it around for a couple days. So far no change, vibration still there. This is sounding like its going to be a long process.
Its called a friction modifier and its not going to do a thing for your issue. You need to tell the dealer that you have a V-6 model and they don't have a limited slip in the rear diff which what the modifier is for. If you did have a limited slip they will bind without the modifier, but you don't so its probably not going to do much for your problem.