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Most auto parts stores will test your charging system for zip.

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6y ago
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6y ago

You take a digital multimeter, check for voltage (should be between 13.6 and 14.6), then test for amperage output (IIRC, the 4.3 for that year came standard with a 105 amp alternator).

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Q: How do I trouble shoot the alternator system on a 1995 Chevy Astro van?
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