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  1. #1
    Sr. Apprentice theindnman's Avatar
    Join Date
    Jan 2011
    Location
    Santa Maria, CA.
    Posts
    32
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    Angry BATTERY DRAINING ON MY 03' TAHOE 5.3 4x4

    Greetings,

    I have a 2003 Chevy Tahoe 5.3 4x4, I am having problems with my battery draining overnight. Found some info on BCM issues online. Had my wife take it in to local Chevy dealer to repair or replace BCM. Two days later I'm having the same problem. Because of my work schedule I was not able to take it in myself so didn't get a chance to ask questions or find out specifically what they did. I'm desperate for help and to get this problem resolved because it is preventing me from passing a smog test. Anybody else have similar problem or heard of this problem?
    theindnman
    Santa Maria, CA
    03' Chevy Tahoe
    5.3 4x4

  2. #2

    Default Check does battery drain if disconned from vehicle?

    Check does battery drain if disconned from vehicle?

    Quote Originally Posted by theindnman View Post
    Greetings,

    I have a 2003 Chevy Tahoe 5.3 4x4, I am having problems with my battery draining overnight. Found some info on BCM issues online. Had my wife take it in to local Chevy dealer to repair or replace BCM. Two days later I'm having the same problem. Because of my work schedule I was not able to take it in myself so didn't get a chance to ask questions or find out specifically what they did. I'm desperate for help and to get this problem resolved because it is preventing me from passing a smog test. Anybody else have similar problem or heard of this problem?

  3. #3
    Sr. Engineer
    Join Date
    Oct 2010
    Location
    Indianapolis, In
    Posts
    493

    Default

    Did you have them check out the battery problem or just instruct them to replace BCM?
    2000 GMC YUKON SLT, 5.3L tow pkg, G80 rear/w 3.73 gear

  4. #4

    Default

    How old is your battery?
    1994 Chevy K2500 Silverado, 454 (modified), original owner.
    And other vehicles and toys.

    "...If you can meet with triumph and disaster
    And treat those two imposters just the same;
    ...you'll be a Man, my son!" Rudyard Kipling

  5. #5
    Sr. Engineer Dana W's Avatar
    Join Date
    Dec 2011
    Location
    Chuluota, Florida
    Posts
    361

    Default

    Do your vanity mirror lights go out when you close the flapper door? Mine didn't.

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