What is your question?
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What is your question?
Not hearing anything. New battery and alternator tested.
What makes this problem better or worse?
engine cold
How long has your 2014 Buick Verano had this problem?
2 weeks
1 Reply
Hello, if your voltage is truly fluctuating that much, then you have an alternator or charging system problem. The alternator and wiring harness / connector should be closely checked. 12.5 is basically an inoperative alternator. Your battery reference voltage when charged should be 12.5 or so.