Brake controller

[goldenarm_laird]

Ok folks here's the deal. Got a 2010 3500 dually we use for rodeos. The service brake controller message showed up. Also the check engine light came on, doors started locking, air conditioner stop blowing cold. Replaced the relay, fuse, and dash switch. Didnt fix it. Got an A.M controller, installed and nothing, no power to it. Any suggestions?

 

[Ron Nielson]

Is the controller being fed by a 12V circuit? Test to be sure you have 12V going into the controller.

 

[goldenarm_laird]

Is the controller being fed by a 12V circuit? Test to be sure you have 12V going into the controller.

I believe so. Feed off the stud off the front of the battery. Another question. Does the factory controller need to be disconnected? How bout all the trailer fuses?

 

[Ron Nielson]

Yes it does, at least for my 2008 model. Go here and find the Electrical Manual for your year/truck model and I'm pretty sure there will be information about this. https://www.gmupfitter.com/pages/body-builder-manuals