Help Me Understand
I have a 2013 Chevy Silverado Extended Cab with 5.3 engine with 77000 miles on it. I purchase this vehicle in April 2019. I have driven it about 2000 miles and pulled my 23 trailer with no problems. ...
Forum Discussion
Nothing sounds out of the ordinary to me. The voltage will fluctuate based on the electrical needs of the vehicle at the moment, the state of battery charge, and what the electronics in the vehicle computer think is appropriate charging for the conditions. On many modern vehicles it does cycle the alternator under low load conditions once the battery is charged to help save fuel. Even without that, changes in electrical loads are entirely possible, such as from automatic headlights turning on or the radiator fan starting up or stopping. Your battery is getting charged while you're driving, clearly, so the system sure seems to be working as designed.
(I don't have a GM truck, but I certainly have noticed the voltage varying on my Honda Fit for various reasons while driving, and its charge system empirically has worked just fine in as much as the small original battery is still installed and working after 7.5 years and over 150K miles....)
(I don't have a GM truck, but I certainly have noticed the voltage varying on my Honda Fit for various reasons while driving, and its charge system empirically has worked just fine in as much as the small original battery is still installed and working after 7.5 years and over 150K miles....)
