Question about 2007 GMC Envoy Denali

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Wiring diagram or fuse box diagram-2007 GMC Envoy Denali

I need a wiring diagram or fuse box diagram for 2007 GMC Envoy Denali trailer towing package problem. It's a 7 wire auxillary plug. The trailer brakes work fine, but all the lights do not come on. I don't know if it is a fuse or in the wiring. If it is a fuse, I need to know which one.

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Hi there;

Here is the wiring diagram for the trailer wiring for your truck.
wiring diagram or fuse box diagram-2007 GMC Envoy  - 22593cd.jpg
Hope this helps

Posted on Mar 18, 2009

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The problem might be related to a faulty ground on the trailer. If the lightson you envoy work, then the problem is either a bad ground or a wiring problem with the trailer hookup.

Posted on Mar 09, 2015


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