the 4L60E seem to be a weak transmission. my parents was rebuilt at 120K on their 2003 and my suburban 2004 was at 135K. the 5.3 with regular maintenance runs great. crappy gas mileage
x2 on the trans. I seem to be doing 2 or 3 of these per month. 120-130 k like clockwork. If it's got more miles, it's probably been done... less, you'll be doing it soon. Other than that, good overall rigs.
What kind fuel mileage you get in yours?
That sounds pretty good to me!
Actually the trans failure rate is pretty low considering HOW many were produced.