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sometimes its a way to let you know that something is wrong with your automobile. take it in and have a diagnostics test ran on it and that should tell you whats causing that to happen. some places charge a fee and some places like auto zone do it for free. hope this helps In any vehicle the battery light comes on usually when the charging voltage falls below 13 volts, which usually means that the battery is not being charged. In most vehicles the alternator produces 14+ volts to run vehicle and recharge the battery. You may want to have the alternator checked and also the battery cables to make sure the alternator is putting out the right voltage and that the battery cables are not grounding out.

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Q: What causes the battery light to come on in your 1998 Chevy Tahoe?
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