Truck stalls and won't crank after going into reverse

[boolinhemi]

I just got my 03 ram 1500 hemi back a few days ago after having a reman put in, with a diff fluid replacement and trans fluid replacement, but not a flush. Yesterday I noticed that the wire connection for the fan for the AC was unplugged after searching for the reason my air was blowing hot. I plugged it back in and it started to run cold after that. I even put some AC pro in it. It drove perfectly fine for the rest of the day. today after driving to the store, I put the truck in reverse to back up and all the sudden it stalled out. There were squares surrounding all of the gear selections, P R N D 2 1. I tried to restart it several times and it would not crank. It was trying to turn over but it would not crank up. I popped the hood immediately to check for any signs, my worst fear was that something was wrong with the new motor. But I remembered how the AC was unhooked, so to see if anything changed I unhooked the connection for the AC fan again and tried to crank it up and it did. I cranked it back up, and there were squares outlining all of the gear selections on the dash cluster. I put it into drive and let off the brake and it seemed to be going forward fine, but it still had all of the squares on all of the gear selections on the dash. I stopped and put it into park and put it into drive again after and the squares went away besides the one surrounding the D. I drove it around like this for a while with no problems. Then later on I reconnected the AC fan to see what happened. It has been blowing cold and driving okay since. What would make this happen?

Thanks

 

[chefred112]

go underneath and unplug and re-plug the the tranny connector plug (big square plug by the shifter linkages)...this has happened to me when I've helped guys do tranny stuff..