DEAD BATTERY..........AGAIN???

[Xmicro_SS]

I did a few searches on this, but could not find anything real recent or exactly the same.

So, back in the fall, I garaged my car for the winter. One month after I finally got time to put the battery tender on. I go to the garage and the battery is already dead. I put the charger on and apparently it was completely dead and calcified, so the charger could do nothing. I left it on and tried, to no avail. so I left it dead, garage is alarmed and safe so no issues.

Spring came and I went to Advance Autoparts and got a heavy duty battery $165 and put it in (Slightly higher cold crank rating). I drove the car 3 times and went away on vacation. Next time I went back to the car only 2 WEEKS later, battery is so dead, I cannot recharge it AGAIN.

I have an appointment to bring it to the dealer, which I will have to jump it to get it there, or flatbed it.

I was wondering if anyone else with a 2010 2SS/RS has had this problem? What the heck can kill a BRAND NEW battery in two weeks, ridiculous.

Thanks in advance for any insight.

[xlroadster]

There is possibly a glitch in the electronics that keeps drawing power from the battery until it is completely dead. Did not have this issue on my SS, but did have it on a BMW 528i.

[2SS 2011]

I used to keep my 2000 camaro Z28 stored with a Yellow top Optima Optima battery..Never had an issue

[2010SLVRBULIT]

sounds like an electrical parasite killing your batteries. Next time, disconnect the battery when storing..

[ffrcobra_65]

definitely shouldn't be draining the battery that quick. My SS goes weeks between starts. For instance, last time I started my car, it had been about 6 weeks since last, and it cranked strong and fired up on second crank.

[2SS 2011]

There is definitley a draw of some kind.. Any aftermarket Stereo or alarm work done?

[Xmicro_SS]

Nope, no aftermarket, completely stock! I mean that battery was dead in 2 weeks.

[KIZE]

You didn't leave the lights on, right? Just kidding!
You could hook up a milliampere meter inline to test it. There's some tiny current draw reqd for clock and other settings. My guess would be in the 100 mA range, but u could get that from a svc dept. Anything significant enough to kill/calcify your battery is much more than that, and you've got a problem. Shouldn't be happening, for sure. I left my camaro parked last summer for five weeks. Came back and it fired right up, like it had run the previous day.

So u could put an amp meter between your red positive and the post, record the drain, and let your svc dept know what u find.

[Nails]

I had the exact same problem when I first got mine. It would be dead after sitting for three days. It ended up being a crushed wire shorting out under the drivers seat. It took them three days of testing the wiring system to find where the short was coming from. The dealer can perform a test to see if there is short draining the battery. Good luck I hope they find out what's causing the problem.

[KIZE]

Yes. Definitely a short somewhere.

[Xmicro_SS]

I finally got time to go out and putz around on my Camaro a Bit, and I am a bit of an idiot. I had a defective Knight Rider Light a while back and I could have sworn I disconnected it. Turns out I never did.

So I am betting that is what my issue is. I completely 100% removed the piece and put the stock piece back and removed every trace of it.

I went back to advance auto parts and they replaced the battery 100% free of charge. Part of their guarantee........ sweet! THANKS ADVANCE AUTO!

I forgot how much I love my SS. Man it halls arse.

I have an appointment on Wednesday morning at the Chevy dealer. I will let them take a look at it. I want them to meter it when it is just sitting and see if they see any excessive draw. If they say it is fine, time will tell. I am sure it will be sitting a week at a time.

Thanks all for the feedback, much appreciated. I will let you know if Chevy finds anything!

[PQ]

Well, I've had an ongoing problem that ended up getting a bad lifter knock added to it that all turned out to be an exhaust manifold leak.