Rayzram
Active Member
- Joined
- Aug 5, 2018
- Messages
- 152
- Reaction score
- 82
I have a 2011 2500 4X2 showing service trailer brake all the time. Throwing U0137. Does this key on, engine running, trailer or no trailer. I cleared fault code no trailer connected, cycled ignition to on and code set instantly prior to even starting the truck. Factory controller is dark (nothing light on dislay), all fuses good, connections to ITBC are plugged in and tight.
Any advice where to begin? I suspect the ITBC took a poo.
Any advice where to begin? I suspect the ITBC took a poo.
