2010 international maxxforce dt

Hi guys I'm new here I am having issues with my 2010 international maxxforce dt 24' reefer truck. I started it and while I was doing PTI I got a electrical fault on the dash display. I noticed that the indicator that showes if it's in RND4321 was not there. I shifted from N to D and then D to N to R and no indicator and trans did not shift. I started with the basics like batts cables fueses inside and at batt. I checked "jiggled" plugs and wires at bcm and at tcm I also checked voltage on the pins that plug into tcm I had two 12v from batt and one 12v from ignition and had to good grounds. Can't remember the exact PIN numbers but I had the pin out that told me which ones to check. I removed plugs on the ecm and cleaned checked and plugged back in "pain in the butt to get to". I checked for bad connections at the fues panel by passenger dash and found a bad connection I could hear relay clicking when a wire was moved still no fix. I checked wiring that goes through firewall for damage and nothing. What's weird is when I disconnect batt and reset computer I can start truck and shift and drive for about four minutes then the electrical fault pops up and the shift indicator goes away and trans goes into limp mode. Thankfully truck is at my house not roadside bad news is I am 150 miles from international service center and local guys won't touch it cause they don't have correct scanners/computers and cause it's got the auto trans. If any has any help please let me know.

 

appreciate your reply will double check those connections I will let y'all know what happens in the future.

 

FYI I have a 2500hs auto trans

 

This is the one active code I show
Spn:2003
Oc:39
Fmi:9
Sa:23
Conn----
Pin:n/a

 

Sorry for not replying right away turns out the tcm was bad. Bought a new tcm had it programmed and been good since. Thanks for helping me out.