I don't have a letter yet, but I will in a couple of days.
I'm sooo happy!
I just called HUMMER and said I was concerned about wheeling with a truck that was almost out of warranty (38.6K). Until they had the "diff" issues resolved, I would be afraid of breaking down on the trail.
I also said, "If I were breaking half shafts or tie rods, you would not be hearing from me, those can be repaired on the trail. Differentials can't. And if I were to break another one, I would not be able to afford the $1,000.00 + it would take to fix it."
About a week later they called me back and were proud to offer me and extended warranty
I love my HUMMER!