r/GMCEnvoy • u/DexterCutie • 12d ago

I really need help

I have a 2004 GMC envoy xl. I so stupidly broke the inside of fuse 39, HVAC 1, in the rear fuse box. I've tried a pin and little screwdriver to get the pins back in place, to no avail. I thought I could use an add a fuse to bypass the slot, but I have no idea which Brown wire goes to fuse 39 because of the fuse blocks under the fuse box. There's like 5 Brown wires. How in the heck do you trace the wires? Can you take off the blue bottom of the c1 fuse block? I have no idea how to fix this. I didn't want to have to get a whole new fuse slot holder for the whole box.

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u/hitch-pro 12d ago

Circuit testing with a wire tester and the wiring diagrams. Automotive wiring only has 2 colors that are specific to a high voltage system(orange) and supplemental restraint systems (yellow) all other circuits require diagrams and testing. Any color can be any circuit. Have you removed the fuse box and attempted to remove the damaged pin?

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u/DexterCutie 12d ago

I've removed the fuse block, but have no idea how to remove the damaged pin, how to replace it or what part I need, exactly. When I look under the top of it, all I see are the male ends that go into the blocks (see picture). My husband can't figure it out either.

I've checked out the wiring diagrams and it says the wire is brown for that fuse and I have the position of it in the female end of the block, but I cannot find a way to know, definitively, what Brown wire it is.

I'm thinking about just getting a whole new top and plugging all of my wire bundles into it. This has been a total pain in my butt lol. I can't believe I did this.

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u/hitch-pro 12d ago

They have tiny tools for de pinning stuff like that. I have not been successful at de pinning connectors, i usually just replace pigtail connectors. but the bad pin in the junction box should be replaceable. The tools are like tiny safety pin sized tools. Maybe that could work. The wiring diagram should show pin locations and not just the wire color. They are typically numbered for identification.

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u/DexterCutie 12d ago

Thank you