I know there is a TSB on a whine coming from the rear axle. I noticed the same thing on my truck. At first I thought it was because I drove it too fast too soon. I am taking it to the dealer tomarrow but if anyone has any information on the problem, cause or cure I will greatly appriciate it.

 

What year, motor, any mod's, etc. are you asking about?

 

'03 S-crew, FX4

 

yes there is tsb on rear end wine, has instruction to place shims to change the yoke angle.... for short answer . Sometimes is works really well, sometimes not.

 

Under warranty. Take it to the dealer.

Steve