My 2014 Silveardo has been having an intermittent issue with the battery? I've had times where the truck sat for 3 days and barely started and times where I drive it around town, stop for 10 minutes and then it won't start. When it won't start, the voltage on the dash shows it's completely dead. Had the battery checked and they said it's good. I don't think there's a drain because of the issue where I stop briefly, and it won't start. It can't be the alternator, because it's never died while driving and the voltage shows fine while running. I'm leaning away from the starter because of the low voltage indication on the dash. I have a little jumper battery that I hook up when this happens, and it has no problem jumping it. Any ideas?

Replace the battery. Always the first place to start on issues like this. Newer vehicles with all the electronics act weird on old batteries even if they test good.

How old battery and have you cleaned all major ground/power connections?

That's the thing, battery is only 2 years old. High dollar battery too. Connections are tight and clean on terminals. I need to check ground again.

I had a similar thing happen in a 2002, totally intermittent, chased down a bunch of stuff (grounds, ignition switch), ended up being the body control module, which just had to be reset/reprogrammed by the dealer. Despite the fact that i told them the battery was good, it was just the electronic issue that was making the dash show low voltage when you turned it on, they still took the liberty of replacing my battery and magically couldn't find my old one when i asked to have it back.

Interesting. No codes ever showed up for that?

Classic dealership.

I don't believe it ever had any codes stored after it had gone dead on me then came back around, it was like nothing ever happened. Had it towed to dealer when it finally died and wouldn't come back

Bad cell

Recheck the connections. Those GM side posts can strip/have wear in the contact area and appear tight and ok. I went through this years ago on a 96 Yukon (acting weird/not charging/then charging) and ended up having to replace both the battery and the battery terminals. With all the electronics on the new ones, I'm sure the symptoms are worse.

Texasclipper said:

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Recheck the connections. Those GM side posts can strip/have wear in the contact area and appear tight and ok. I went through this years ago on a 96 Yukon (acting weird/not charging/then charging) and ended up having to replace both the battery and the battery terminals. With all the electronics on the new ones, I'm sure the symptoms are worse.

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Silvy can chime in but I think GMT900 and newer all went back to top post.

Ya, it's top post. Connections are tight. I'm leaning towards dead cell in battery. I'm gonna replace it and go from there.

I don't fux wit GMT900 and newer

But standing by statement on connections. Clean at battery and also where it terminates. I fought power connections on my GMT400 for years. One of the times it quit starting was the 12v supply connection at the fuse box. I haven't had any issues since I made new cables and started using military style top post terminals.

ETA it could still certainly be bad battery, but you should check/clean connections regardless

Checked all connections and terminals, everything was tight. In the past few weeks it has gotten to where I was having to jump it anytime it sat for more than a few hours. That screamed battery to me, so I went ahead and replaced it. Everything is working great now.

I'm very surprised, that's the second time I've replaced the battery in 4 years. The first time was under warranty. I bought the truck with this battery: SLI94RAGMDP X2Power Premium AGM. Second battery maybe lasted two years. For such a high dollar battery ($350), I would've expected a longer life.

Was it under warranty? Those AGM batteries usually have longer warranties.

Unfortunately, no. The warranty period is from the time of the original purchase, it didn't reset when the first one was warrantied. So those batteries only lasted 2 years. I'll be curious to see how long this one lasts. I went with a different, less expensive one, still has a 4 year warranty though.