2017 3500HD SERVICE ALARM

[TKers]

HI, i never had these issues before. While towing my trailer for 400km using cruise control. Service Trailer Brake , Service StabiTrak, and my ABS light comes on, and kicks out cruse control. I have read about the G218 Ground, and the Starter head shield ground. Anything else i could look for? I am on the start of a long road trip and go figure hey

 

This is on a 2017 3500 HD 6.6 Duramax L5P. 

Edited June 19, 2021 by TKers
added info

[TKers]

I cleaned and did the G218 Ground issue. Unplugged trailer. Still has service trailer. Unsure. No codes being thrown. 

[newdude]

There is codes most likely.  You need a good reader like a BlueDriver that can pull codes across the whole vehicle and not just the ECM.  

 

You'll probably find a C1114 or something along the lines.  Probably a bad trailer brake control switch, bad trailer plug or bad trailer brake control module.