Well, I realligned the NSBU switch a little bit, and it was still not working. So I took the code reader, hooked it up again to see the codes, then just for the hell of it, I erased the codes on the truck, and it worked fine. Now granted Im new to alot of this electronic crap on these vehicles, so I didnt really know what I was doing, but with your guy's help, and a little imagination, we got 'er fixed. Thanks guys.
Next Ill worry about the grinding from the transfer whenever Iam in 4x4. But its done snowing, so atleast I can drive my truck again.
03' 2500HD Chevy Duramax ext cab long bed