Yeah i have read responses to this issue and several fix ideas. so my 04 150k miles, turn hard left but not right the body shakes and feels like the tires are fighting each-other and on pavement you can smell burnt rubber. i also have an identical 03 with 170k on it that i have had 2 years now. it does not do that...at all. yes the awd works well on the 03, we get snow and it was fun. so the "its normal awd operation" is false. when jacked up off all 4 no problem.
so far i did
Differential fluid change and additive. Fail
Tcase fluid change... fail
the pain in the butt Viscus coupler change at $380.....fail
still no change at all. taking it to the shop to have them go over it next week. we are thinking its the differentials themselves.
my last wheeler had a tru-trek in front and a detroite locer in back. turning at full lock it would buck but nothing like the 04 groans and vibration.