What is your question?
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What is your question?
I have a 2006 Hummer H3 5 cylinder with about 133,000 miles. The car has an aftermarket radio, subwoofer, and amp. I noticed revently (Because the car was sitting a few days) that I had a parasitic draw on the battery so I tested it and here are the numbers. The battery is 3 years old and only holds 12 volts but I had it tested and they said it was good. I pulled off the negative terminal and checked the amp draw between the terminal and the battery stump. I know there will be some draw (.05A is acceptable), but I was reading .14A. I started pulling fuses and found that the RDO was pulling .01A which I think is ok. The Aux power 2 is pulling .05A which I think is due to the sound system in the car but is that normal? Last but not least, the BCM was drawing .06A. Does that mean my BCM is bad and is this something an amature mechanic can handle fixing? any info is greatly appreciated.
What makes this problem better or worse?
the car is dead after sitting for a few days
How long has your 2006 Hummer H3 had this problem?
a few weeks
1 Reply
Hello, any draw about .075 is something I'd be concerned about. Because your concern on the surface appears to be related to "multiple components", I'd always start with the components that don't belong. Namely, the aftermarket components. Disconnect them and your problem will almost certainly disappear. I highly doubt your BCM on its own is causing a problem. I don't really consider researching draws and possible causes anything for an "amateur mechanic", honestly. Depending on the validity of your test results, you're on the right track. But this is something I'd probably want a diagnostic tool to check operation of components with also. And, again, always remove what doesn't belong before trying to attack factory components.