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Battery drainig on my 03' Chevy Tahoe 5.3 4x4

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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. Anybody else have similar problem or heard of this problem?


  1. mgiachello71's Avatar
    Hey man, Im new to this site but I have an 2001 Gmc Sierra 4x4 that was doing the same thing. One day it would start the next it wouldn't. I never found out what was wrong but it hasn't done it in a long time. Idk let me know if you find out the problem.