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lb7 electrical issues

  1. NEED HELP! 03 LB7 electrical issues

    General Discussion
    Hello, I have a 2003 GMC Sierra Lb7 and I am having multiple intermittent electrical issues, my windows won’t go up and down, my nothing works in my gauge cluster except speedometer and tachometer, my ac doesn’t work, ABS, Brake light, and battery lights come on, my power locks won’t work...