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How do you wire in electric trailer brakes in a pre wired 2003 GMC Envoy?
Wiki User
∙ 11y ago
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.
Wiki User
∙ 17y ago
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either you have the connector wired wrong or you have a short in the wireing on the trailor!
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check the ground wire on the trailer. if it is corroded at all they may not work. take a file to where the ground wire is hooked up to make sure it is on bare metal
