1999 GMC Sierra 1500 Q&A

1999 GMC Sierra 1500 Question: I have replaced everything except my transfer case and my 4x4 will not shift.

My 4x4 is stuck in 4lo, replaced everything , what should I do next? -
Answer 1
check the control module for the tranfer case, fuses and or relays -
Comment 1
Module is new fuses are good. Where is the relay? -
Comment 2
where the actuators replaced, also known for faulty switch -
Comment 3
Yes everything is new -
Answer 2
What does a professional scanner say about this problem? Any codes for the transfer case?? It could actually be a mechanical malfunction inside of the case! -