*HELP* Integrated Trailer Brakes 2011 GMC Yukon Denali *HELP*

[Matthew Snyder]

In the picture posted above, there are two wires attached to the left stud. Can you tell me where these go/come from? There's only supposed to be one wire on that post that I'm aware of.

One wire goes all the way to 7-pin connector for 12v aux power, another goes to power the integrated trailer brake controller and it's my understanding the third is to power a harness which should be tucked under the dash for an aftermarket plug and play controller..

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[Matthew Snyder]

Pretty sure the ITCB located beneath the spare tire needs to be replaced/reflashed as the internals seem to be unreliable. This has been my deduction from the situation.

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[swathdiver]

One wire goes all the way to 7-pin connector for 12v aux power, another goes to power the integrated trailer brake controller and it's my understanding the third is to power a harness which should be tucked under the dash for an aftermarket plug and play controller..

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You cannot have an aftermarket controller hooked up at the same time as the factory ITBC or it will disable itself.

 

[Matthew Snyder]

I believe that to be true ( not having dual controllers hooked up) however wouldn't think that having the harness wired up would affect it so long as the harness is not actively connected.

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[swathdiver]

I believe that to be true ( not having dual controllers hooked up) however wouldn't think that having the harness wired up would affect it so long as the harness is not actively connected.

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Agreed but I never know with these things, a few extra ohms of resistance may turn it off, if that's even correct, I'm not an electrician even though I play one!