Reply To: 2014 GMC Sierra stuck in 4WD

[Richard Sweeting]

Yes sir i have worked on a couple of them first take the positive and negative off the battery and put them together for 30 sec.and then put the positive on then the negative on then turn ignition switch to on position for 30 sec.This will help with reprograming of the moduals.And if still you need to pull of the acuator on transfer case and get the trany fluid out of it and reinstall then try again. Hope this will help. Richard Sweeting