Question about 2003 Chevrolet TrailBlazer

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Draining Battery My 2003 Chevy Trailblazer's "Battery Charging" dashboard light and dash gear indicator remain illuminated even after I turn off the vehicle. Battery needed a jump this morning but the battery itself was tested as good. What might be keeping these lights on and is that what is draining the battery?

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  • Contributor
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Sounds like the ignition even though its turning the vehicle off is not completely switching the ignition switch off could be a faulty switch or bent rod going to switch not the ignition itself but the switch

Posted on Mar 30, 2014

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  • Chevrolet Master
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Try remove fuse one at a time and see witch circuit is at false
place a ampmeter to battery to know what is the draw it should be around 30mA . anything higher than 30mA is too much that what drain the battery,
hope it helps

Posted on Mar 30, 2014

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Check the alternator. You can observe your interior dome light or the vehicle headlights as you rev the engine. If the light intensity changes with as the RPMs of the engine changes, then you have a faulty alternator.

Posted on Mar 30, 2014

  • Eric Salmonsen
    Eric Salmonsen Mar 30, 2014

    The gentleman from AAA who jumped the truck this morning tested the battery and the alternator and said that neither was faulty. I just bought the vehicle so I believe I will go back to the dealer and have them solve the problem.

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Posted on Jan 02, 2017

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SOURCE: I have a 2000 chevy metro 4 cyl 1.3 the vehicle

thats a good question. very hard problem to fix. i had a 2005 colorado i went through 4 batteries in 3 years. chevy could not find problem. they said i had a drain. never did find it sold vechicle.

Posted on Feb 25, 2009

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SOURCE: My 2003 Chevy 1500 ran out of gas and wont start?

you will probably need to reset the fuel shut off relay.

Posted on Feb 25, 2010

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SOURCE: 2007 hhr. Battery was drained. Mother left lights

your alarm system has been tripped when the battery went dead, to get the information on how to reset the alarm is to call the car manufacture to get the procedure, and should not cost you anything.

Posted on Jun 23, 2010

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SOURCE: I have a 2003 Chevy

Your problem is most likely the fan relay. It is normally under the hood in the fuse box. Open the fuse box locate the fan relay (most are labeled ) If labeled tap on that relay and the fan should shut off if it does the relay needs to be replaced. If its not labeled tap on the relays one at a time till it shuts off. The one you tap that shuts it off is bad pull it out like a fuse and replace it. 4 thumbs up is appreciated if this helps.

Posted on Dec 24, 2010

alicantecoli
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SOURCE: battery not charging on 2003 chevy trailblazer battery light on dash is on also

could be a problem with the cables ,check they are connected and you have a 12v supply on the big thick cable from the battery to alternator as some vehicles have a fuse in this line and iam not familar with american vehicles sorry ,if you have power then renew the alternator complete unit prefferably with a bosch factory rebuilt unit if available in your area or country

Posted on Dec 24, 2011

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Volts slowly drop to where what quits ,The vehicle stops running ? Is the charge indicator light lit on the instrument cluster /? are any lights lit on the instrument cluster ? The instrument panel cluster (IPC) illuminates the charge indicator and the BATTERY NOT CHARGING message is displayed in the message center when the following occurs:
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A possible alternator failure. It would have shown a battery charging warning light on the dash before failure if this is the case.
Restart with a donor battery and check dashboard for charge warning indicator. If illuminated, then replace alternator.

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could be a problem with the cables ,check they are connected and you have a 12v supply on the big thick cable from the battery to alternator as some vehicles have a fuse in this line and iam not familar with american vehicles sorry ,if you have power then renew the alternator complete unit prefferably with a bosch factory rebuilt unit if available in your area or country

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