Quote:
Originally Posted by MackSteelPrivateEye
Our charging sys is computer monitored and it adjusts itself as it sees fit as required by the load. Thats why it fluctuates unlike the older cars that stay at one voltage output at idle. Although you would see a slight increase in voltage as you gave it more gas.
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This is correct. IDK about the Camaro specifically, but I am well-versed in 12V systems in boats as mine has a complex 12V system with massive AGM batteries. AGMs are finicky and like to be charged at certain rates. Their life can and will be shortened by improper charge profiles.
AGMs require 14.1-14.4v for absorption stage and 13.44-13.56v for float stage. This is likely why someone here was seeing 14+ on short trips and in the 13's after driving awhile. I don't think we should ever be seeing in the 12's while our cars are running, but some here report that and some have said that's normal. IDK what the Chevy engineers have done or how it's supposed to work, but on my marine application I never see less than 13.5 while the shore power charger or engine alternator are running.