Battery Drained. 2000 Silverado

Discussion in 'GM Electrical Tech' started by Santoy956, Sep 22, 2010.

  1. Santoy956

    Santoy956 Member

    Ok guys i have a 2000 silverado z71 and i just got a new battery yesterday and today in the morning it was drained and when i was trying to turn it on all my dash lights and guages started going crazy and it sound as if somthing is shorted in the system but it hasnt blown any fuses. I need help asap cause i depent on that truck to get me to school.
    Any advice is welcome. Thanks in advance. :grrrrrr:
  2. Big75

    Big75 Rockstar 4 Years 500 Posts

    you sure you got the cables on tight?
  3. Santoy956

    Santoy956 Member

    yes im sure cause it clicks when i try to turn it on.
  4. hundojoe

    hundojoe Rockstar 100 Posts

    Did the truck start when you put the new battery in? I always charge a new battery before I put one in cause you never know how long its been siiting on the shelf, and it might have had enough reserve in to to start your truck, but if you did not drive it for very long you prolly took more power out of it then the alternator put back in.
  5. Big75

    Big75 Rockstar 4 Years 500 Posts

    It will still click if you have a bad connection you may even get radio, lights, the whole nine. Just saying it happened to me.
  6. Santoy956

    Santoy956 Member

    it started right up when i put it in and i drove it for about an hour. i think that there is a bad connection cause i just charged it and it drained the battery again.
  7. hundojoe

    hundojoe Rockstar 100 Posts

    Pull your starter and have it checked, Ive seen when starters start to go bad the will drain the battery.
  8. Morris

    Morris New Member

    hello guys...
    thanks for sharing information..
  9. Santoy956

    Santoy956 Member

    i did that yesterday and the starter was good.:great: but i think the ignition swithch as gone bad.
  10. gexter

    gexter New Member

    I am working through a short problem myself.
    I would make sure the alternator is good before pulling the ignition switch. A Bad alternator can give bad voltage or even A/C and that could account for your crazy gauges. It could also discharge your battery if the diodes are bad and creates a path to ground. I am going through this and pretty sure this is going on with mine but no one has confirmed by suspicions.

    It does looks like yours is shorting faster than mine which could mean the starter could be killing the battery and after you figure out if the alternator is good check the solenoid on the starter because that is where I would check first on the starter.

    I hope that helps but i hope its much simpler like loose connection. that would be great if that was my problem.

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