08 battery dead!!!! HELP!!!
Safety Car
Joined: Sep 2008
Posts: 4,296
Likes: 156
From: Location: Location: kAnSaS
there is something odd going on with ls3 batteries. Battery tender or not no way it should be dead unless it sits for a long time. mine has done it a few times as well once when it sat for a week once when it sat for 2 weeks. No rhyme or reason really. Must have a some ECM control staying on like the car recognizing the fob and coming out of sleep mode???? noone knows the answer and the symptoms dont add up eiher
Melting Slicks
Joined: Aug 2008
Posts: 2,999
Likes: 2
there is something odd going on with ls3 batteries. Battery tender or not no way it should be dead unless it sits for a long time. mine has done it a few times as well once when it sat for a week once when it sat for 2 weeks. No rhyme or reason really. Must have a some ECM control staying on like the car recognizing the fob and coming out of sleep mode???? noone knows the answer and the symptoms dont add up eiher
Sorry...had to do that as an owner of an '05.
Racer
Joined: Mar 2008
Posts: 353
Likes: 0
From: CA
I have a 08 bought new in April 08. Never had a problem with the battery. I let the car sit for over 3 weeks some times. I NEVER park it in reverse. I have to tell you, if it ever dies I'm going to go "postal" on somebody. As a owner of nothing but Hondas and Toyotas and never having any problems I would have a problem with this US GM design and backyard engineering. Are any of you still wondering why they are in the toilet???? Totally unreal for sure.
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Team Owner
Joined: May 2004
Posts: 82,175
Likes: 1,319
From: McKinney TX
St. Jude Donor '21-'22-'23-'24
Team Owner
Joined: Mar 2008
Posts: 21,502
Likes: 462
From: Southern Utah
I have a 08 bought new in April 08. Never had a problem with the battery. I let the car sit for over 3 weeks some times. I NEVER park it in reverse. I have to tell you, if it ever dies I'm going to go "postal" on somebody. As a owner of nothing but Hondas and Toyotas and never having any problems I would have a problem with this US GM design and backyard engineering. Are any of you still wondering why they are in the toilet???? Totally unreal for sure.
Burning Brakes
Joined: Nov 2005
Posts: 804
Likes: 3
From: San Francisco Ca.
I have a 08 bought new in April 08. Never had a problem with the battery. I let the car sit for over 3 weeks some times. I NEVER park it in reverse. I have to tell you, if it ever dies I'm going to go "postal" on somebody. As a owner of nothing but Hondas and Toyotas and never having any problems I would have a problem with this US GM design and backyard engineering. Are any of you still wondering why they are in the toilet???? Totally unreal for sure.
Safety Car
Joined: Nov 2007
Posts: 4,436
Likes: 875
From: Bay Area CA
I have an 08 and have no battery issues, even after the car sits for 2 weeks it starts up. I do, occasionally hook up a CTEK battery charger to maintain a healthy battery state. Good luck
Safety Car
Joined: Oct 2003
Posts: 4,024
Likes: 13
From: Loveland CO to Central Coast CA
...Bad strategy if you're looking for reliable long-life battery service.
At least, follow the owner's manual: If the vehicle is driven infrequently, remove the black, negative (-) cable from the battery. This helps keep the battery from running down. Yes, you'll have to re-initialize the windows. Just be sure you can unlock the hatch with your key (try it), and that you know where to find the manual door release.
A battery tender is a better approach IMO. My C6 spent most of the winter on a CTEK 3300, no problems. And I always connect it whenever I expect my car to sit unused for more than a few days. Why not? It keeps the battery fully charged, and goes thru a maintenance cycle for best battery life.
And BTW, parking in Reverse was only necessary (by design) on the 2005 manual-tranny C6.
Last edited by CO Lightfoot; Aug 15, 2009 at 02:32 AM.
Le Mans Master
Joined: Aug 1999
Posts: 5,411
Likes: 2
From: N Carolina 08 Z51 Coupe
My 08 battery died in 3 weeks after getting the car.. I think it was my fault as I left something on that did not automatically shut-off..
The dealer replaced it and I have had no issues in almost 2 years..
The dealer replaced it and I have had no issues in almost 2 years..
Team Owner
Joined: Nov 2007
Posts: 45,274
Likes: 8,545
From: Rochester, NY
I have a 08 bought new in April 08. Never had a problem with the battery. I let the car sit for over 3 weeks some times. I NEVER park it in reverse. I have to tell you, if it ever dies I'm going to go "postal" on somebody. As a owner of nothing but Hondas and Toyotas and never having any problems I would have a problem with this US GM design and backyard engineering. Are any of you still wondering why they are in the toilet???? Totally unreal for sure.
Le Mans Master
Joined: Dec 2005
Posts: 7,753
Likes: 210
From: North Western Connecticut
there is something odd going on with ls3 batteries. Battery tender or not no way it should be dead unless it sits for a long time. mine has done it a few times as well once when it sat for a week once when it sat for 2 weeks. No rhyme or reason really. Must have a some ECM control staying on like the car recognizing the fob and coming out of sleep mode???? noone knows the answer and the symptoms dont add up eiher
.... I could not agree more! Been saying that exact thing for the past 3 years. Why can some vettes sit for weeks without a problem while others a week or even less? Makes no sense! I've had my 06 MN6 parked for over 3 weeks without a tender and it's starts fine. Why? My buddy has an 08 which goes stone dead in 10 days? It drives him crazy. Been to the dealer several times and they've changed the battery twice in less than 12,000 miles. They keep claiming there is nothing wrong but why the dead battery? He's extremely frustrated with the problem! I believe there is some piece of electronics that does not shut down properly in all vettes. I don't even believe it does it all the time either. With so much electronics it's a real problem and one GM should fix IMO....
Melting Slicks
Joined: Aug 2008
Posts: 2,999
Likes: 2
You would think that this C6 dead battery syndrome would be something that Vette engineers would be able to diagnose and fix after all these years. I've not heard of any other recent factory cars with this many electrical issues. It aint rocket science!
Maybe they should come from the factory with an effective electronics shut off system AND a battery-tender system built in.
Maybe they should come from the factory with an effective electronics shut off system AND a battery-tender system built in.
Melting Slicks
Joined: Feb 2004
Posts: 3,131
Likes: 148
From: Sugar Land TX
Same thing here. If I go out of town for a week I can plan on a dead battery. However after the first trip I started leaving the negative terminal off. Shouldn't have to go though this trouble but if I don't want a dead battery that's my solution. I know get a battery tender, take it to the dealer, that's all find but a battery tender is something you still have to do which you shouldn't and the dealer, forget that unless something serious goes wrong. I've been though the dent and scratch scenario with dealers.
