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Topic starter

2008 GMC sierra burnt wire,

I have a gmc that the wire burnt off coming from a black box on the fire wall by battery. The wire goes accros to the fuse box.

I would like to know what that box is called and the proper name for the wire that comes from it to the fuse box.

I was having a no start but could hear clicking from the fuse relay , I changed the starter relay and it started but on the way home I could smell something burning. Truck quit as I arrived home poped hood and noticied wire was burnt off and melted.

The black box is by the battery a wire comes from the battery and two wires come from the box , burnt one and one to the starter I think. 

Any help would be greatly appreciated.

Thanks

5 Answers
2

You've got a short somewhere. Shut off the truck. Remove all the main fuses in the underhood fuse box.

Get a multimeter, put it in the mV range, and clip your leads to either side of the mega fuse.

Now put your fuses back in one by one. If you see the voltage jump then you've found the circuit with the short.

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cars have dozens of black boxes. Please post a photo or something. I guarantee there's a part number stamped into it that you can web search.

Black box is the case for mega 175 fuse, wire runs from fuse to fuse box.
The wire from the mega fuse is the wire that keeps on burning off.
Replaced 175 fuse twice , still same problem.

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I would need a picture of it

Black box is the case for mega 175 fuse, wire runs from fuse to fuse box.
The wire from the mega fuse is the wire that keeps on burning off.
Replaced 175 fuse twice , still same problem.

0
Topic starter

Hello All,

I have a 2008 GMC sierra, I have an issue of the mega fuse wire coming from mega fuse going to fusebox burning off.

(wire burning off just after the mega 175 fuse)

If anyone has any information on how to fix and why this wire heats up so it burns off. 

Please let me know

Thanks

Do not post multiple copies of the same question please.
It's stated clearly in the forum rules which you should review.
Thanks.

0

There is a short to ground somewhere in that circuit.

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