Wasn't there a TSB on the 4X4 shift lever?

 

try rolling at 2-5 mph throw it in neutral than engage 4hi
its worth a shot

 

You don't have to be moving to put the vehicle in 4Hi.....only 4L... you can be sitting stationary and pop it into 4Hi...something else is wrong or your not being aggressive enough with it...

 

Seriously guys its like i just have a lever thats not attched to anything, i could move it with my little finger its that easy

 

It should def. feel like you are shifting. If there is NO feel to it then the linkage isn't hooked up. Swing by the dealer and ask them to look at it.

 

I've had 2 issues with 4wd so far. I've had the rig for 5500 miles so far and I've had two problems. One with the 4wd sensor and one with actual shifter. I don't bother asking what the problem is because I don't care and I know it's not from misuse. I do use the Jeep off-road but I don't like the fact that every time I go wheeling I have to have the 4WD fixed. It doesn't seem so amazing that I have a lifetime powertrain warranty anymore. Good luck, I get premium service from my dealer for certain reasons and it took a couple days each time.