DBS Problem
Thread Starter
Heel & Toe
Joined: Feb 2006
Posts: 21
Likes: 0
From: Cheyenne Wyoming
DBS Problem
I see a lot of references to a "DBS" issue or problem. I have looked over the forums and archieved forums to see what this is but only see posts about it being an issue not what it is, which years, how to correct, etc. Can anyone tell me what is it, does it affect all manual
C6's to the present and and how is it fixed?
Thanks.
C6's to the present and and how is it fixed?
Thanks.
Team Owner
Joined: Mar 2006
Posts: 53,282
Likes: 3
From: God Bless America
The dead battery problem happens in 05 manual cars for the most part. I just had this happen to me when my car sat for a little over a week. With the manual trans cars, you are suppose to put the car in reverse and put the parking break on when parking the car, I have always done this and never had a problem until now. Some owners who have not put the car in reverse with the parking brake on find their batteries are dead the next time they try to start the car. This happens because not everything shuts down unless the car is in reverse and the parking break is engaged. Others on the forum have replaced the factory battery with a better battery like an Optima to fix this problem. I have have my own suspicions about this problem and I think the factory battery is part of the problem...not a real high end battery. Anyway, I just put a new Optima red top in my car and hope this will be a permanent fix fo me.
Pro
Joined: Sep 2004
Posts: 638
Likes: 2
From: Medford NY
St. Jude Donor '05-'07
2005 manual C6's must be shutoff in reverse or the car will stay in ACC mode and drain the battery. The term DBS, dead battery syndrome, was coined to describe the condition where a 2005 manual C6 was correctly shutoff in reverse but unexplainably had a dead battery after only a couple of days.
The term is now used to describe any unexplained dead battery on any year, any transmission C6.
The term is now used to describe any unexplained dead battery on any year, any transmission C6.
Race Director
Joined: Aug 2005
Posts: 13,592
Likes: 187
From: Hudson WI
NCM Sinkhole Donor
FYI it is not just Corvettes. GM had similiar issues with most On-Star cars early in 06, G6 Pontiacs and a few others. DCX has CAN bus issues on several models. I haven't heard of any Ford issues.
CAN bus is the best thing that ever happen far battery manufacturers, because they get to sell more batteries.
CAN bus is the best thing that ever happen far battery manufacturers, because they get to sell more batteries.
3rd Gear
Joined: Apr 2006
Posts: 3
Likes: 0
Dbs
I just had my third DBS event on my '05 MN6. This time it sat only a week with the shifter in reverse and everthing off. I know it was in reverse because I roll the car in reverse before shutting it dowm to make sure.
Now I see that some of you mention it should also be shutdown with the parking brake on. last time I brought it to the dealer for DBS they only talked about putting in reverse. Is the parking brake a new "fix" or just a general suggestion?
It's going back to the dealer for the third time this week, maybe they'll get tired of seeing it and at least try a new battery.
iF ANYONE HAS ANYTHING NEW ON dbs please send it along.
Now I see that some of you mention it should also be shutdown with the parking brake on. last time I brought it to the dealer for DBS they only talked about putting in reverse. Is the parking brake a new "fix" or just a general suggestion?
It's going back to the dealer for the third time this week, maybe they'll get tired of seeing it and at least try a new battery.
iF ANYONE HAS ANYTHING NEW ON dbs please send it along.
Team Owner
Joined: Feb 2000
Posts: 53,498
Likes: 77
From: Arizona
Originally Posted by prs62
The term is now used to describe any unexplained dead battery on any year, any transmission C6.
Those are dead batteries, but can't be DBS without MN6, reverse requirement and SCL. Only 05's.
Those batteries are dead from other causes.
Team Owner
Joined: Feb 2000
Posts: 53,498
Likes: 77
From: Arizona
Originally Posted by poliva
I just had my third DBS event on my '05 MN6. This time it sat only a week with the shifter in reverse and everthing off. I know it was in reverse because I roll the car in reverse before shutting it dowm to make sure.
Now I see that some of you mention it should also be shutdown with the parking brake on. last time I brought it to the dealer for DBS they only talked about putting in reverse. Is the parking brake a new "fix" or just a general suggestion?
It's going back to the dealer for the third time this week, maybe they'll get tired of seeing it and at least try a new battery.
iF ANYONE HAS ANYTHING NEW ON dbs please send it along.
Now I see that some of you mention it should also be shutdown with the parking brake on. last time I brought it to the dealer for DBS they only talked about putting in reverse. Is the parking brake a new "fix" or just a general suggestion?
It's going back to the dealer for the third time this week, maybe they'll get tired of seeing it and at least try a new battery.
iF ANYONE HAS ANYTHING NEW ON dbs please send it along.
There is a new BCM flash upgrade out now. Call your dealer, it is supposed to specifically address DBS and shut down sequence anomalies:
http://forums.corvetteforum.com/show....php?t=1495433
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Team Owner
Joined: Mar 2006
Posts: 53,282
Likes: 3
From: God Bless America
Originally Posted by Hoonose
GM has found that doing a short move in reverse after placing it in reverse might interrupt the shut down sequence.
There is a new BCM flash upgrade out now. Call your dealer, it is supposed to specifically address DBS and shut down sequence anomalies:
http://forums.corvetteforum.com/show....php?t=1495433
There is a new BCM flash upgrade out now. Call your dealer, it is supposed to specifically address DBS and shut down sequence anomalies:
http://forums.corvetteforum.com/show....php?t=1495433
Thanks for the information on this, I still have to take mine in to get the roof inspected so I will ask them to look into this as well. Hmmm, better yet, I will ask them to check everything that a tech bulletin has been issued on to make sure I don't have any other surprises sneaking up on me. I just had to pick an 05....but its mine all mine and no one is getting it....
Burning Brakes
Joined: Jul 2005
Posts: 1,224
Likes: 258
From: Lockport NY
DBS on a 2006 6 spd Conv.
I am having the same problem, bought the car new in July 06, and the battery has been dead 4 different times. nothing is ever on,( in reverse, brake on, no mods) and after jumping it starts, but park it overnight, dead again...Going to dealer on sat, but I seen on this forum the majority of problems is with the 2005's, we also have an 05, and luckily haven't had DBS on that one. It's getting that I am afraid to drive the 2006 , for fear it wont start when I get back in.
Team Owner
Joined: Feb 2000
Posts: 53,498
Likes: 77
From: Arizona
Originally Posted by B&BVettes
I am having the same problem, bought the car new in July 06, and the battery has been dead 4 different times. nothing is ever on,( in reverse, brake on, no mods) and after jumping it starts, but park it overnight, dead again...Going to dealer on sat, but I seen on this forum the majority of problems is with the 2005's, we also have an 05, and luckily haven't had DBS on that one. It's getting that I am afraid to drive the 2006 , for fear it wont start when I get back in.
Navigator
Joined: Sep 2006
Posts: 9
Likes: 0
From: New York
I have a 2006 , 6 speed.
It has been back for dead battery and they replaced the battery.
The battery drops to 50% charge overnight, after being parked at 100% charge.( it would be dead in 2 days).
When I shut the car off, the parasitic current draw drops slowly to 15 milliamps.At this rate it would take 2 months to discharge. For 2 hours the current draw goes up and down but never excedes 50 milliamps.(the battery would last 2 weeks at a steady 50 milliamp draw.)
So sometime during the night something comes on and drains the battery. If not for this the battery would never be an issue.
I would like to know which circuit is draining the battery.
Leaving shifter in nuetral or reverse does'nt affect this .
It has been back for dead battery and they replaced the battery.
The battery drops to 50% charge overnight, after being parked at 100% charge.( it would be dead in 2 days).
When I shut the car off, the parasitic current draw drops slowly to 15 milliamps.At this rate it would take 2 months to discharge. For 2 hours the current draw goes up and down but never excedes 50 milliamps.(the battery would last 2 weeks at a steady 50 milliamp draw.)
So sometime during the night something comes on and drains the battery. If not for this the battery would never be an issue.
I would like to know which circuit is draining the battery.
Leaving shifter in nuetral or reverse does'nt affect this .
Team Owner
Joined: Feb 2000
Posts: 53,498
Likes: 77
From: Arizona
Originally Posted by stevenbrower
I have a 2006 , 6 speed.
It has been back for dead battery and they replaced the battery.
The battery drops to 50% charge overnight, after being parked at 100% charge.( it would be dead in 2 days).
When I shut the car off, the parasitic current draw drops slowly to 15 milliamps.At this rate it would take 2 months to discharge. For 2 hours the current draw goes up and down but never excedes 50 milliamps.(the battery would last 2 weeks at a steady 50 milliamp draw.)
So sometime during the night something comes on and drains the battery. If not for this the battery would never be an issue.
I would like to know which circuit is draining the battery.
Leaving shifter in nuetral or reverse does'nt affect this .
It has been back for dead battery and they replaced the battery.
The battery drops to 50% charge overnight, after being parked at 100% charge.( it would be dead in 2 days).
When I shut the car off, the parasitic current draw drops slowly to 15 milliamps.At this rate it would take 2 months to discharge. For 2 hours the current draw goes up and down but never excedes 50 milliamps.(the battery would last 2 weeks at a steady 50 milliamp draw.)
So sometime during the night something comes on and drains the battery. If not for this the battery would never be an issue.
I would like to know which circuit is draining the battery.
Leaving shifter in nuetral or reverse does'nt affect this .
Your problem is something that will require dealer and maybe GM involvement.