Hey guys, need some help. Have an 02 ram 3500 5.9. just changed rear main seal and oil pan seal. Put it all back together and none of the grars engage, including park. Truck is in permanent neutral. Checked the linkage and everything is connected. Tried with transfer case in 2h 4h and 4L and nothing. What am I missing here?

 

It's an automatic by the way.