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2003 chevy astro van battery light goes on and off any ideas why?

I had the battery and alternator tested at Auto Zone on their hand held computer it said they were both good....

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  • Anonymous
    9 years ago
    Favorite Answer

    Could be a lose drive belt or the voltage regulator (inside) the alternator is failing. You might want to take it off and have it bench tested if the belt seems tight. Some times the handheld (toaster) can't pick up everything.

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