Parasitic draw

larrysec6208

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Hi, trying to find a draw on my 2004 gmc sierra 1500, pulled and checked the main fuse panel under the hood with no change, pulled cluster, master window switch on drivers side, headlight switch. no change. aftermarket radio, no change in draw... im stumped.
 
Having the same problem. The old AGM bat got to the point where it would not fully charge. Sprung for a new replacement, installed and it was dead overnight. Have a suspicion it is from erratic passenger electric running board. The owner's manual shows no location. Online help is the same. Don't want to go to the dealership and continue to make them rich.
 


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