Question about 1999 Chevrolet Tahoe

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Battery Keeps Draining

I have a 1999 Chevy Tahoe. I just started driving it after a year of not driving it. I got a New battery(DieHard Gold) and it drove fine. But I didn't drive it for three days, and try to start it up, but it drain again. This is the second time this happen, that's why I didn't drive that much. I had an alarm put on it years ago, and it never drain the battery. My alternator is fine. What else could be draining the battery...thx

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  • D Mar 19, 2014

    I also got the charging system check, and everything is fine



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If the battery discharges by leaving it shut off you can rule out the belt or the battery terminals. The battery is new so it shouldnt be bad, and you have had it tested along with the alternator so both of those should be ruled out as not being problematic. It sounds like you have a massive parasitic drain in your electrical system. Ultimately something is closing the loop between the + and the (-) sides of your battery via your extensive electrical system. Granted, finding the source of the problem will be headache lol. Hope this helps

Posted on Mar 19, 2014

  • Nicola Conroy Mar 19, 2014

    If the battery discharges by leaving it shut off you can rule out the belt or the battery terminals. The battery is new so it shouldnt be bad, and you have had it tested along with the alternator so both of those should be ruled out as not being problematic. It sounds like you have a massive parasitic drain in your electrical system. Ultimately something is closing the loop between the + and the (-) sides of your battery via your extensive electrical system. Granted, finding the source of the problem will be headache lol. Somewhere in your cars electrical system either a wire or malfunctioning device is grounding out, or a device is continually running and using electricity. Hope this helps



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SOURCE: 1996 Chevy Blazer battery draining/won't start

What normally you have to look for is that your belt is running properly because your car might be running a lot more off the battery and not so much of f the alternator, but normally if the alternators bad it will drain the battery even if the cars not running.. Yes your first thing you would want to do is check the wiring and al that just because thats cheap and easy but most likley you wanna get the altenator can get that done at advance auto.. please rate me if you get a chance and if you have any other questions just let me know ill check up on your problem..


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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

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SOURCE: 2001 chevy silverado 1500 v8 battery drain after sits for 1or2day

, do a simple test on the charging system...check battery voltage. should be 12v or better. start engine & check volts at idle, no accessories on. volts should read 13.5 -14v. Turn on all accessories(including headlamps on high) volts should drop slightly but should not creep down. Definitely not below 12.5. If voltage drops lower than 12.5, the regulator (in the alternator) is not working. either change regulator or change entire alternator. Alternator drive belt should have sufficient tension so that alternator cannot be turned easily by hand. If it can, check belt tensioner.

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SOURCE: positive terminal keeps getting corroded even after 3 weeks.

Try keeping the terminal far away from any moisture and dirt. In fact isolating it may not be a bad idea. Try getting a battery box for it or sealing off the existing one, just make sure to use a drain tube and vent. Some stores have battery terminal isolators, these are less effective but can help. There is also a battery terminal sealant spray that may be helpful if you cannot get/use a battery box. Clean the terminals thoroughly, spray the terminal sealant, and use the battery box for a three way attack. This is especially use full in harsh climates. These methods can also be used on remote battery terminals that are on some cars.

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SOURCE: 2003 Chevy Tahoe, blower keeps running after shut

well it sounds to me as if you have a bad blower resistor allowing the continuous flow to the motor. or else you have a faulty relay there and its staying applied not releasing..or else you have a bad blower motor

Posted on Nov 19, 2009

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