Stuck in 4wd
 

I own a 2016 gmc Sierra 1500 that's stuck in 4wd. I had a T/C warning light that went away when I shut the truck off and restarted it .4wd service alert is active. The 4wd light lights up on the switch but nothing happens. Tried disconnecting battery for 30 mins, removing #6 fuse, I removed the transfer case motor and heard a spinning sound when I removed it. Is there any way to switch to 2wd manually so I can drive it ?