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How do you wire in electric trailer brakes in a pre-wired 2003 GMC Envoy?

April 26, 2017brakes electric envoy GMC pre-wired trailer wire

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How do you wire in electric trailer brakes in a pre-wired 2003 GMC Envoy?

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If it’s anything like the 2005 Envoy, there are four wires tied to the side of the steering column without any sort of plug on the end. These are for the electric trailer brakes. I don’t recall how they’re labelled (they didn’t match my brake’s instructions exactly) but they were pretty intuitive.