Aryan

I recently had a new motor put in my 00 Silverado and before I had it put in everything was fine and the only alert I had was “service engine” which was for my O2 sensors in my exhaust, but after having the motor put in, I can’t go into 4wd anymore and the light isn’t showing up on the dash and also my gauge cluster keeps turning off mid drive as well as my radio. Both my radio and cluster restarts seconds after it stops working as well. Has anyone had this problem or does anyone know a fix to these problems? Thank you