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01 GMC yukon 6.0 liter / after sitting over night with a full charged battery the battery will be dead even with the altanator completely disconnectted and the radio fuses out. Do you have any other sugestions?


Is it a brand new Battery..

Is it a brand new Battery.. How old is battery . If has any age go have the battery tested. If cell is bad it will die fast with barely anything running. And if you are saying you charged it yourself or are you thinking that your alternator is charging it. If that is the case then it might be a bad alternator.

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