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Q:

Jumper cables got hooked to battery in one vehicle and fuse box in envoy. on 2002 GMC Envoy

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The light in front work. No back lights. No power locks. No power window. And no dash panel lights are working. But car runs fine.
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Im aware its a electrical problem. The fuses are still in good shape. I was kind thinking maybe the mother board is fried. Im wondering if maybe you know if there is anything I should look for? Or any ways to be sure it's the mother board. Wondering if this has happened to anybody and they fixed it inexpensively?