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09-29-2005, 02:34 PM | #1 | |
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2001 Battery Drain
Can anyone tell me how to diagnose a battery drain on a 2001? If it sits up a couple of days, the battery runs down to the point of not starting. Any help would be appreciated.
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12-04-2005, 09:50 AM | #2 | ||
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Re: 2001 Battery Drain
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12-10-2005, 07:40 AM | #3 | |
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Re: Re: 2001 Battery Drain
disconnect the negative cable and use a 12 volt test light between that and the battery. it should glow.
while this is hooked up, begin pulling fuses ONE AT A TIME and REPLACE each after pulling them. the circuit that is draining the battery will shut the test light OFF. this gives you an idea which circuit is draining your battery and where to look for any shorts. if the light does not go out after pulling fuses, next is to unplug things like the alternator, etc etc... i've done this on my '81 vette with excellent results. using this method i have found many problems with people's cars, including a bad alternator on a ford truck. |
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12-11-2005, 06:41 AM | #4 | ||
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Re: Re: Re: 2001 Battery Drain
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12-13-2005, 04:08 PM | #5 | |
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The battery will normally have a drain of about 50 milliamperes to run the electronics. Be sure your battery is OK, a weak cell could cause this. If it's the original battery, I'd replace it without bothering to test it.
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04-16-2006, 03:44 AM | #6 | |
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Re: 2001 Battery Drain
Had the exact same problem.
Dealers thought it was a batch of bad starters. It wasn't, it was the cable that goes to starter. Starter is exposed to plenty of heat because it is right next to Cat converter, which has to be removed to change starter. Cable harness was shorted. GM covered all expenses and supplied another new battery, also the tow truck bill. Had the extended warranty. |
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