2010 Denali-Intermittent voltage drop

[iamdub]

I was actually going to ask about this myself. Ours does the same thing, and battery has had to be charged or jumped a few times after sitting with doors open, radio on, etc, but not for extend periods of time, and I thought this was the problem. Not so much when sitting overnight. Might be time for a battery. The sticker on the old one says it was new sometime in 2018...

RVC isn't the problem, a dying battery with a weak reserve is your problem. Two years is young, but it could just be a defective battery or it has been subjected to multiple dischargings. You may be able to revive it with a trickle charger/desulfator.

 

[JEndsley]

RVC isn't the problem, a dying battery with a weak reserve is your problem. Two years is young, but it could just be a defective battery or it has been subjected to multiple dischargings. You may be able to revive it with a trickle charger/desulfator.[/QUOT

RVC isn't the problem, a dying battery with a weak reserve is your problem. Two years is young, but it could just be a defective battery or it has been subjected to multiple dischargings. You may be able to revive it with a trickle charger/desulfator.

This is the direction I was leaning after what I have been seeing the last week. But I sure didn't know about the strange voltage thing they are doing. I guess we learn something new every day.

 

[iamdub]

It's definitely a strange thing if you don't know about it. Nobody likes to see their voltage gauge read like a dead battery!

Also, batteries with problems tend to show those problems when the weather changes, usually from warm to cold. A battery might be fine all summer, but then act out with the first cold snap.