Jml21

I have a 2014 Chevy Silverado 1500 So my dad change my starter and the vehicle starts up fine, but my steering wheel is locked and I’m getting messages for my trailer brake system,power steering,traction control, and stabilitrak. We’ve checked the wiring and we’ve checked all the fuses and relays and they are fine, when we ran the scan tool it gave us a u0121-00 code and said that it has lost communication with electronic brake control module. Could the module be the issue or does anyone know of any simpler things that could be causing this ?