Recent content by Dlewis59

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    2007 Tahoe Sporadic Parasitic Battery Drain

    Hi Joe, sorry for the late reply. What I started doing is I have a shutoff procedure when I park the tahoe overnight. 1. Before key turnoff, turn off the power to the climate control, dvd/radio off, dome lights off, unplug any chargers in the power points. 2. Turn off engine (key). 3. Turn...
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    2007 Tahoe Sporadic Parasitic Battery Drain

    Well, I’m down to monitoring it and shutting off specific fuses at night to try to isolate the module over time. I took the tahoe to our Chevy dealer and they had it for a week monitoring and testing it, did a voltage drop test, and they reported that the only thing they see is a normal 14mA...
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    2007 Tahoe Sporadic Parasitic Battery Drain

    I thought I'd update everyone here. I have run the Draw Monitor 10 times for 12 - 18 hours each time. Thought I'd share the "blow by blow" in case it sparks a thought. Sure appreciate everyone's feedback thus far. I'm going to be checking each of of your suggestions out individually as...
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    2007 Tahoe Sporadic Parasitic Battery Drain

    Thanks Joe. That's an interesting one. I haven't replaced any bulbs except a front headlamp. Hmmmm.....
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    2007 Tahoe Sporadic Parasitic Battery Drain

    These are all great suggestions! Thanks to all of you for contributing. Here’s an update. I have been using the Power probe monitor for 12-18 hours a day (usually overnight) to record the draw going on during that time. I have run it 6 times now. It has shown a normal shutdown draw between...
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    2007 Tahoe Sporadic Parasitic Battery Drain

    I have another theory on this issue that I’d love your opinion on. I noticed that yesterday when I connect my battery analyzer/charger to the battery, it showed 40% capacity. I thought that was strange as I had it was disconnected while doing the overnight monitor test with the power probe...
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    2007 Tahoe Sporadic Parasitic Battery Drain

    Thank you to everyone for the insights and suggestions! I’m very happy to connect with all of you on this forum. Even though the first thing I tried was to replace the alternator when I was having the batteries die, I will see about doing an alternator diode test as suggested by @mikez71...
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    2007 Tahoe Sporadic Parasitic Battery Drain

    Help! I am at wits end on this issue. I have very well maintained 2007 Tahoe that started having a dead battery issue. I originally thought it was just the battery, but after several replacements have discovered it’s a parasitic draw. It happens sporadically however, not every night. The...
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