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2013 Chevrolet Suburban
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01 2500 Suburban ATC Battery Drain

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Old May 13th, 2013, 9:31 AM
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Default 01 2500 Suburban ATC Battery Drain

I am on Prince of Wales Island in Alaska (long ways from any dealer) so I have to fix this myself.

The battery would go dead after sitting for a week so I pulled the neg cable and checked amperage between the cable and the battery terminal. After everything goes to sleep I am getting around 450 ma drain that goes away when I pull the ATC fuse.

Can anyone tell me what is on that circuit or where the problem might be? The push button 4wd functions correctly but it is like a module is not going to sleep. Would it be the transfer case control module? Can I just buy one and install or does it have to be programmed once you install it?

Thanks in advance for any help or ideas
Old May 13th, 2013, 1:31 PM
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Are you parking it at the chopper pad? I'd suggest if you are working offshore, and having to leave it for a week, is there not 110 ac available? If so, buy a small trickle charger to keep the battery up, do you have a block or dipstick heater?
Old May 13th, 2013, 6:59 PM
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I really need to fix the problem instead of working around it
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