Update/New Truck E/Brake Problem

[Anonymous-0]

I know some folks like to here the fix for some questions asked so let me say thanks to all that offered thier help.
Problem was new Sierra with a built in brake controller would not recognize the trailer was hooked up unless you cut the truck off and restarted plus unplugging and replugging. Whew!!

First I replaced the 6way plug and adapter with a 7way on the trailer. Guy at the trailer place didn't hold out much hope that I could make the swap. Don't know if it was the gray hair or what.
Got home and did a little googling for wiring diag. Then I remembered look in the dressing room dummy.

Then I found that GMC had thier diag. on the cover flap for the plug. No problem from wiring but that didn't fix the problem.

Here it is. By a stroke of luck, me and little son pulled the left front wheel first. This what we found.

Wire had fell up against the tire and rubbed right through. Spliced them together and tied them to trailer. Worked like it charm!!
I'll be the first to admit I wanted to blame it on the new fangle gadgets on the truck.
Sometimes we try just to hard for the easy fix instead of a little dirt and perspiration.

Again THANKS to those that offered thier help.

Marty

 

[Hobo,NC]

Glad to see you found the problem, every one who has a trailer needs one of these.

I just battled thru a problem with a trailer brake. Had to cut all the scotch locks out (Folks should B hung no trial for even having them in their possition)

Fought a bad ground on the trailer, come to find the trailer brake was wired in the trailer plug on the back up lite side.
Tester, Cheap 2

 

[fixerupper]

The words SCOTCH LOCK is profanity and should be used only against the people you dislike the most. Late last fall I spent four freezing hours trying to find out why the parking lights didn't work on a truck. Finally I discovered someone had tapped an idiot light wire off of the parking light wire under the dash, using, well, one of them. I finally opened it up out of desperation and the corroded wires fell right out. Jim