Welcome to the TDR!
If you have the manual transfer case (lever on the floor), Neutral is one slot forward (the pattern is <fwd to rear> 4Lo - N - 2Hi - 4 Hi) Someone will chime in if it changed from '04. If it's the electric shift, I think there is a position for neutral. I have an SLT so I have th manual t-case.
I'd suggest adding to your signature all the important information about your truck so we can help you better. Go to user control panel, and select "edit signature"
Again, welcome here!
Juan