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Thread: 2003 Suburban battery draining
02-03-2012, 08:02 PM #1
- Join Date
- Jul 2008
2003 Suburban battery draining
The battery on my 2003 Suburban keeps being drained. I charge it up to 12+ volts and overnight it drains to about 5-6 volts. I believe I have ruled out a bad battery as I have switched it with another vehicle and the problem stays with the Sub. I removed the wire that attaches to the alternator and the problem doesn't go away so I think it isn't the alternator, plus the battery reads at about 14.75 when the Sub is running so the alternator seems like it is doing its job??
What else would be draining the battery that fast? What else do I check and how?
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