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Location to Install Brake Controller Power Fuse on 2003 GMC Sierra  


Where do I install the trailer fuse?


Expert Reply:

I am assuming you are speaking of the fuse that activates the power feed to the brake controller.

The 30 amp fuse is installed in the power distribution box as shown in the photo I have edited. The power distribution box is located under the hood, on the drivers side on the fender well.

I have linked you to an FAQ article that describes how to install a brake controller on a 2003 GMC Sierra.

expert reply by:
Mike L
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