Leone1662

I had a 2016 with 38,678miles and charged all day everyday around 13.2-14.5 never had a battery issue. Now this one nothing different besides it’s an 2018Lt and the other was a 2016 Wt both had one battery and 220amp alternatorthe 18 during the day it’s at 12.5 and at night is 14.5. Can’t tell me battery is always charged during the day. Truck has 1,400 miles on it

Idk about that where I live it hasn’t been above 60 and even if it’s 50 degrees out truck sits at 12.5 volts

2018 Silverado 2500 LT 1,300 miles truck during the day shows volts at 12.5. I can turn on ac full blast, radio and defroster and colts stay at 12.5 all day. When driving volts stay at 12.5 when I’m rolling and foot of gas mpg gauge goes up to 99mpg then will charge at 14volts as soon as I hit the gas bolts drop to 12.5. And night when headlights turn on truck will charge at 14 volts. First two times truck was taken to dealer they said nothing is wrong now the third time they tell me that’s not normal and change alternator and never fixed the problem still in the shop. Anyone have same issues or volts stay around 13.2-14.5 volts all day and night

Update 2018 Silverado 2500 LT 1,300 miles trucks back at dealer due to voltage staying at 12.5volts steady. They finally say that it is not normal. They replaced the alternator (why idk bcm controls voltage output) and didn’t fix the problem. Now they are calling a gm tech for assistance supposedly. Also drove another 2018 2500 Silverado that was at the dealer for 30miles and voltage fluctuated between 13.5 and 14.2 (scantool was on as I was driving to make sure gauge was accurate) never once dropped below 13.5. Anyone have same issues or voltage stays above 13volts

During the day mine stays at 12.5 then at night with lights on is 14

Where does your voltage stay most of the time 12.5, 13.2, 14, 14.5? Which one? This will be my last question lol

Thank you that helps just odd that my 16 2500 never did this it stayed at 14v consistent

Just bought a 2018 2500 Silverado noticed voltage gauge is down at 12.5 while driving and will just sit there until I turn on headlights. I know this is a new system but how is it ok to run the truck on 12.5 then charge only when needed. Doesn’t this shorten the life of the battery. Or is it supposed to fluctuate from 13 to 14 and I’m having and issue.