Battery Occasionally Discharged?

[mlepage]

Every once in a while, like a few times a year, I go to start my 00 Yukon, and the battery is dead. But when I charge it with a battery pack, it seems fine.

I figured out at first this was due to leaving an FM transmitter plugged into the outlet, which remained on even when the vehicle was powered off. So I stopped doing it.

But just today, I drove my truck for a few minutes at 9am, it was fine, and at 11:30am I went to go somewhere else and the battery was dead.

Now, I had some 4x4 wood panels in the back, and the cargo door, although closed, was giving me the "cargo door open" warning light on the dash. Is it possible this was also triggering some other electrical stuff that drained my battery in that time?

Or is there an underlying problem with my circuitry?

Or is my battery just dying, time for a new one?

Please advise, thanks.

 

[WrenchGuy]

Sounds like you might have a dead cell. Pull into Autozone have them test it.

They do it free just go in and buy an air freshner at least...lol

 

[Rivieraracing]

If the switch that tells whether the cargo door is left open in messed up, it may be leaving the interior lights on as if the cargo door is actually open (I'm pretty sure that mine stays on when the door is open). It would be worth messing with and seeing if that is the problem that you are having.

 

[WrenchGuy]

Yeah just make sure the battery is good since you had to revive it a couple times.

 

[Hoebag03]

my interior lights will shut off eventually even with an open door signal, but mines an 03:confused2: