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GM 3.1L V6's ALTERNATOR OUTPUT VARIES? on 1995 Chevrolet Lumina

My chevy lumina 95 3.1L V6 has its alternator's charging output varies between 13V. to 14V. during a day of normal driving. Is it okay or not?

Note: The alternator's cables are all checked fine.
Thank you in advance!

Asked by for the 1995 Chevrolet Lumina
Normal operation. No worries!!!
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2 more answers
Load the electrical system; Let it idle, turn on the a/c, blower on high, headlights on bright, and any thing else you can think of. If the gauge falls below 13v, have it replaced - If not it doing fine.
Has anyone checked the belt and tensioner?