Electrical short

2010 GMC SIERRA

24,000 MILES • 5.6L • V8 • 2WD • AUTOMATIC

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battery drain, when i disconnect the positive cable the one held with the brass nut going to the fuse box in the engine compartment the drain to the battery will stop. also every time i connect the cable i get sparks until i tighten the nut.

Nov 27, 2019 at 2:43 PM

SCGRANTURISMO

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Hello,

This definitely sounds like have a Parasitic Draw issue going on here. In the diagrams down below I have included a guide for you that explains how to track down the circuit that is causing parasitic draw along with the fuse box diagrams and callouts for your vehicle. Here is a generic guide for you to start with in the link below:

https://www.2carpros.com/articles/car-battery-dead-overnight

Please go through these guides and get back to us with the fuse that is the problem and we can go from there.

Thanks,
Alex
2CarPros

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Nov 27, 2019 at 5:15 PM