in the VX just shift and go...no actual need to do the reverse thing...because you basically are in 4WD all the time so your tcase does not have a 2wd, 4wdh, and 4wdl...it only has a high and 4L.
The reverse thing is for making the hubs lock in...which the VX has LOCKED all the time hubs...not auto and not manual...so no need to do the reverse thing.