Trailer Brake Controller

[DBailey]

I don’t think my trailer brake controller is giving 12 volts to my trailer brakes.  I’ve checked it and I only can get 1.5 volts.  I’ve taken it to the dealership and they said it is getting power to the outlet plug for the trailer.  I asked how much power and they said they have no means of checking to see if it is putting out upto 12 volts.  I have two utility trailers, a 2020, and a 2022 and with full gain It will not lock up the brakes and it barely stops my truck at an idle.  I have a 2020 Silverado HD Duromax.

Has anyone had this problem and if so, how did you get it resolved?

[sheath]

with gain set to 10, and manual slider pushed all the way to full "on" you should get 12V.  But, since the Chevy has a trailer sensing system, you may not see this unless the trailer is plugged in.  You'd need a tap off the brake and negative leads.

 

If your trailer will lock the brakes when connected to another truck, I would explain this to your dealership. Maybe bring both trucks and a trailer to the dealership so the Service Writer/Mechanic can see this.

 

Hope you can get resolution quickly.

[DBailey]

I can’t believe with all the diagnostics GM has, they don’t have a way to electronically send a signal of maximum voltage to the pin in the receiver.  Thanks for the advice.