Transmission Rebuild Features Available In Park Help 2007 Impala

Issue:
I rebuilt my transmission 4T65E in my 2007 Impala. put it back in and put it all back together went to test it out and no crank no start. Noticed it says "features available in park". No shift indication box on the gears.

Things I've tried:
Code read: 0
Re-adjusted the shifter cable. - actually put it in park still no indication
Made sure my grounds are all correct.
No Wires eaten by rodents.
Tried shifting in other gears with shifter and manually by the range switch.
Replaced every relay.

any insight would be helpful.

I have ordered a multimeter and a battery maintainer for further testing .

Things I think it could be
BCM
TCM
Failed NSS
Incorrect placement of NSS roller.

Anything else please let me know .