Thread: Charging issues
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Old 12-07-2016, 01:15 PM   #1
whitedog76
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Join Date: Jan 2014
Location: Peoria, IL
Posts: 1,450
Charging issues

My 04 Trail blazer is having issues.

The battery is draining overnight. If I jump it and let it run, alternator charges. Battery holds charge, if I unhook it.

There is a little arc when I unhook battery, but that's normal. The multimeter doesn't show any measure able amount of current when I hook it between batt. Cable and battery.

After I jumped it the one time, I was getting 14.5 volts, then it would drop to 6-7 and then back to 14. I'm assuming this is normal, since battery was discharged.

I'm guessing there is a bad diode in alternator, but don't want to replace parts un-needed.
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