Dead Battery
Thread Starter
Melting Slicks
Joined: Nov 2004
Posts: 2,285
Likes: 0
From: Denver PA
St. Jude Donor '07
Dead Battery
Yestrday morning I went to start the C6,which I've had for 3 weeks, and the battery was dead. Had to use the the pull cord to get into it. It's a 6 speed, so I had it in reverse, no hand brake on. What could have caused the battery to discharge? Put a charger on it and fully charged it. Anybody have any clues to the discharge?
Team Owner
Joined: Feb 2000
Posts: 53,477
Likes: 77
From: Arizona
Had it happen to mine the other day too.
Maybe not using the car enough, because of bad weather?
Maybe the alternator is not as strong as it could be, for performance sake.
There are all the active sensors radiating their energy, even with the key off.
I think this adds up to an easily drained battery.
Check out the dead battery poll in the general C6 forum. Most were 6 spds.
I'm thinking of going to a more powerful battery if it happens again.
Maybe not using the car enough, because of bad weather?
Maybe the alternator is not as strong as it could be, for performance sake.
There are all the active sensors radiating their energy, even with the key off.
I think this adds up to an easily drained battery.
Check out the dead battery poll in the general C6 forum. Most were 6 spds.
I'm thinking of going to a more powerful battery if it happens again.
Supporting Vendor
Joined: Feb 2000
Posts: 7,302
Likes: 1
From: Los Angeles, CA
St. Jude Donor '03-'04-'05-'06
The same thing happened to us.
Didn't drive it for 4 days and it was so dead that even jumping it wouldn't turn it over. All we got was a bunch of DIC codes while trying to start it. Finally after 6 attempts, it fired up and has been fine ever since. The car didn't even have 700 miles on it. The GM batteries are terrible. I think we are going to drop in the small size red top Optima or a yellow top in it and be done with it.
Shawn
Didn't drive it for 4 days and it was so dead that even jumping it wouldn't turn it over. All we got was a bunch of DIC codes while trying to start it. Finally after 6 attempts, it fired up and has been fine ever since. The car didn't even have 700 miles on it. The GM batteries are terrible. I think we are going to drop in the small size red top Optima or a yellow top in it and be done with it.
Shawn
Racer
Joined: Nov 2004
Posts: 472
Likes: 22
Originally Posted by L.A.P.D.
The same thing happened to us.
Didn't drive it for 4 days and it was so dead that even jumping it wouldn't turn it over. All we got was a bunch of DIC codes while trying to start it. Finally after 6 attempts, it fired up and has been fine ever since. The car didn't even have 700 miles on it. The GM batteries are terrible. I think we are going to drop in the small size red top Optima or a yellow top in it and be done with it.
Shawn
Didn't drive it for 4 days and it was so dead that even jumping it wouldn't turn it over. All we got was a bunch of DIC codes while trying to start it. Finally after 6 attempts, it fired up and has been fine ever since. The car didn't even have 700 miles on it. The GM batteries are terrible. I think we are going to drop in the small size red top Optima or a yellow top in it and be done with it.
Shawn
just curious since I havent heard of any way to see the DTC codes
like you could on the C5.
Melting Slicks
Joined: May 2003
Posts: 2,720
Likes: 1,061
Sorry to say you have now joined the growing "C6 MN6 dead battery club". My problem ceased after the second time the battery died and the car was towed back to the dealer and had the battery replaced. Seems to be defective batteries. There are already many posts on this subject.
Race Director
Joined: Oct 2004
Posts: 10,516
Likes: 2
From: Virginia Bch VA
Cruise-In VI Veteran
Cruise-In VII Veteran
St. Jude Donor '06
Delco Batt
Been reported many times before. Maybe you didn't see the posts. Search a month back on the Gen Forum. As best we can determine Delco had problems with a batch of batteries. Once the Batt was replaced, all reported problem solved. If this has happened to you, Insist that the dealer install a new Batt. Don't let them 
you with, "Oh we charged it up & it should be fine." Once a battery goes dead, it's only capable of 70-80% 
of it’s orig capacity. Your 575CCA battery is now only capable of just 480CCA. You'll discover that when it gets cold. 
you with, "Oh we charged it up & it should be fine." Once a battery goes dead, it's only capable of 70-80% of it’s orig capacity. Your 575CCA battery is now only capable of just 480CCA. You'll discover that when it gets cold.
