Maybe a rear differential flush? But use the newer fluid--the all-wheel drive not the VTM-4.
And maybe a transmission flush?
These are all just suggestions, looks like you been on top of the basics.
If you do a transmission flush, it's not a complete flush, since most of the fluids will still be there. It will need a couple more of drains and refills--after some miles of driving (in between those flushes) to completely remove all the old transmission fluid.
Other than that, I'm as lost as your are after those maintenance concerning hesitation.
Last edited by cl_spdhax1; 02-03-2013 at 08:28 PM.
Reason: Edit: Hooray Staff Sgt!