Question about 2003 Chevrolet Avalanche

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03 avalanche power keeps on drawing from somewhere and in the morning its dead. I will jump it and it will run fine!

I will turn the truck off and the battery light and the radio stays on. I popped the hood and hear a humming sound in the alt. So I unplugged that, took out an ignition fuse out so that everything will turn off on the dash including the radio and its still drawing power and if I let it sit there like that over night, I have to jump it the next morning!

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  • Kevin H
    Kevin H Jan 17, 2013

    I added a new batter and alt. If it was the doors, the interior light would stay on and the battery light, PRND321 would not be on/with the interior lights off.

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  • 87 Answers

Are you leaving anything plugged in, cellphone charger, radar dector, emergency lights, cb, etc, if so unplug all of it that will kill the battery, if not the case, you got a short somewhere

Posted on Jan 15, 2013

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Posted on Jan 02, 2017

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hdpanama
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SOURCE: CHEVY 1500 TRUCK HEADLIGHTS TURN OFF WHEN YOU TURN ON SWITCH

If you have replaced the switch, and it is still doing it it sounds like you definately have a short somewhere in your wiring. On the other hand if the dimmer is in the turn signal arm ( forward bright back dim ) the problem could also be there in the dimmer switch, such as a short being caused by that dimmer switch being faulty.Auto Zone and Discount Auto Parts both test a lot of your electrical problems for free, and/or may have some knowledge to more accurately pin point the problem. Not sure about Pep Boys or some of the other discount auto part chains.

Posted on Nov 18, 2008

tripletauto
  • 1450 Answers

SOURCE: battery keeps dying due to radio+clock staying on

your radio is staying on? you have a bad door switch.the bcm does not see door opening and thus does not turn radio off. most likely the drivers door.

Posted on Dec 12, 2008

  • 39 Answers

SOURCE: Factory Stereo Drains Battery

I have had this problem with a few of my cars and I thought the same that my battery was gettin drained by the stereo but really my battery was going bad hich resulted in the radio staying on for some odd reason, but i replaced the battery and all is good with no more problems, so I would take my battery down and have it tested.

Posted on Jan 31, 2009

  • 35 Answers

SOURCE: 97 Chevy Blazer - good battery, good alternator...still dies???

if you removed the dome lightbulb then there is no longer a draw from the battery there but if the ashtray light light does not go out then over a period the battery will go dead or drained to the point to not the vehicle

Posted on Mar 05, 2009

darjr
  • 378 Answers

SOURCE: Truck Radio/CD Player, no sound coming out of speakers

Have you check the mute mode, maybe it is in mute mode.

Posted on Jun 01, 2009

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Chevy troubleshooter. Car wouldn't start got it jump went to shop nothing wrong with battery or altnator or connections car started fine a few times then it took a few seconds to connect something isn't...


Hi Linda, I'm glad to help!
If I'm reading you message right, your cars battery is going dead and you must jump start it to get it to run. Here's the thing, a cars battery and alternator can be just fine. BUT, the system can still have a draw coming from somewhere that can draw all the power out of the battery and thats why you need to jump it. This can happen intermittantly as well making it almost impossible to find the draw. If this is whats happening then your mechanic will need the vehicle for awhile to find the draw. I'm not there so its hard for me to say this is whats going on, but it's a good place to start diagnosis. Hope this helps and have an awesome day Linda!

Jan 05, 2014 | Cars & Trucks

1 Answer

03 avalanche power keeps on drawing from somewhere and in the morning its dead. I will jump it and it will run fine!


You have a parasitic draw on the battery , Testing to find the draw isn't too hard ,all you need is a DMM - digital multi-meter . Test for voltage drop over the fuse's . I know GM vehicles had instrument cluster problems that would cause this problem , but test first . Watch these videos .
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Mar 01, 2018 | 2003 Chevrolet Avalanche

1 Answer

03 avalanche power keeps on draining from some where.


When you unplugged the alt,did you disconnect the larger alt output power wire?That.s usually where a power draw will be in an alt as this wire is connected to the diodes.

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Battery keeps dying


Parasitic draw is what's happening . Have see instrument clusters cause this ,as well as module's not powering down . You need to do testing to find the problem . Watch these videos an test .
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No power battery new


The Avalanche are famous for the dead battery of not driving for 30 days, Your ECM and various module has a parastatic draw that is normal for you vehicle.You also have the ignition problem. Even though you turn off the ignition remove the key the ignition draw power and this has been a porblem with your year make and model You will need to replace the ignition switch Here is the TSB Bulletin No.04-06-03-002.

Feb 27, 2012 | 2002 Chevrolet Avalanche

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With the battery charged it will go dead sitting for 3 days. With the battery charged and the positive lead disconnected for 7 days the car will start fine when reconnected although there is some arcing...


theres a draw somewhere. these are sometimes hard to pinpoint.start by checking that all lights turn off,glovebox underhood light all lights,you will need a meter to meter the draw amps, then with key off doors closed look at the draw amount,.02 to.03 is allowable, start removing fuses and watch if amps drop,one fuse at atime, start with this to try and pin down a location of the draw.hope this helps.

Jan 04, 2010 | 2002 Oldsmobile Silhouette

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Hi, my 2002 Dodge Dakota has been going dead lately and needs to be jump started. I have already replaced the battery to no avail. It usually goes dead after sitting for a few days. But the max battery...


It could very well be a defective battery, you could have 1 or more bad cells in the battery. A voltage regulator or an alternator. If it isn't one of those then there is something drawing power from somewhere that is causing it to go dead.

Nov 21, 2009 | 2002 Dodge Dakota Club Cab

1 Answer

Battery dead every morning


Something is shorting out (drawing power but not returning it to the battery)
Make sure you don't have any accessories plugged in and running or anything else running or on when you go to bed at night as this would draw down the power!
I'm assuming you have to jump start it every mourning.
Is that correct?
If so the new battery and alternator will be strained and go again soon!
Go to an auto parts store like Advanced Auto Parts and have your battery and alternator tested (they do this for free) and may be able to verify that you have a power draw somewhere!
A jury rig fix would be to put a battery disconnect (available at any auto parts store and pretty easy to install) at the terminal to the battery and disconnecting every night but that won't fix the power draw.
What was the original problem that led you to change the battery and alternator?
jack
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Feb 19, 2009 | 2001 Dodge Durango

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