Stuck in 4wd. Transfer case motor or TCCM?!

[Aturek]

ok folks. I got the dreaded, stuck in 4wd situation going on. My turn knob is only lit at Awd, I bought a new actuator motor and replaced it and it did not help OTHERTHAN its now in 2wd and will not engage into 4wd. (event tho the knob still says AWD). When I replaced the Transfer Case Motor, I heard a big clunk right as i pealed the motor off , which was it disengaging from 4wd. But now i cant get into back into 4wd. 

I also ready somewhere about the TCCM, How do you know if you have a transfer case motor issue or TCCM issue?

 

Lastly, anyone tried resets or reprogramming? pulling a fuse or disconnecting the batter for 6 hours?

 

anyone been in my shoes and solved the issue?

[davester]

I have only manual 4wd setups, so I can't directly help you w your thing.  This is one of the reasons why I don't have electric shift 4wd (in general, it works fine, it's just not easy to fix it if it goes wrong).

 

Maybe take off the encoder and see how it rotates as someone hits the buttons between the various modes.  If it seems to rotate ok, maybe lift one of the front and rear wheels up on jackstands, then manually rotate the shaft going into the TC, and move it through all the modes.  You may have to rotate the front and/or rear driveshaft a bit to get things lined up inside to shift, to get an idea of how hard it is to shift (as maybe something has gone wrong inside).

 

This should at least tell you if the problem is on the control side or the physical side.