DIC: Service Charging System??
Burning Brakes
Joined: Sep 2007
Posts: 801
Likes: 2
From: Las Vegas Nevada
St. Jude Donor '10-'11
Not positive but I think it happens if the car goes below 11 volts. A good cheap start would be to make sure the battery terminals are clean and tight. I would also check my car with a volt meter when the car is turned off and again when the car is turned on. If the battery is below 12 volts when the car is turned off you may be able to fully charge with a real charger or may need a new battery thats losing power on its own.
Race Director
Joined: Nov 2005
Posts: 14,553
Likes: 1,547
From: Supporting the Corvette Community at Abel Chevrolet in Rio Vista, CA 707-374-6317 Ext.123
St. Jude Donor '08
We have been replacing more alternators on C6's lately then ever before for this reason. Also, check the terminals on the alt connector. I have seen some of them coming apart lately.
This is the kind of thing warranty is good for.
This is the kind of thing warranty is good for.
Safety Car
Joined: Jun 2004
Posts: 3,523
Likes: 714
From: panama city beach florida USA
St. Jude Donor '09
i,ll bet there arent too many dealers close to him
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Safety Car
Joined: Jan 2007
Posts: 4,332
Likes: 0
From: Kuwait
Not positive but I think it happens if the car goes below 11 volts. A good cheap start would be to make sure the battery terminals are clean and tight. I would also check my car with a volt meter when the car is turned off and again when the car is turned on. If the battery is below 12 volts when the car is turned off you may be able to fully charge with a real charger or may need a new battery thats losing power on its own.
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Safety Car
Joined: Jan 2007
Posts: 4,332
Likes: 0
From: Kuwait
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Safety Car
Joined: Jan 2007
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From: Kuwait
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 264
From: St. Louis, MO
St. Jude Donor '08
My guess is there's an algorithm for rpm and voltage output, and the underdrive pulley causes the car to not put out as many volts for a given rpm so the code sets and you get the annoying message.
I turned mine off a long time ago and haven't had any trouble since.
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Safety Car
Joined: Jan 2007
Posts: 4,332
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From: Kuwait
No, it can happen if you put on an underdrive pulley and it's a common problem for those with underdrive pulleys. If you search you'll see what I mean.
My guess is there's an algorithm for rpm and voltage output, and the underdrive pulley causes the car to not put out as many volts for a given rpm so the code sets and you get the annoying message.
I turned mine off a long time ago and haven't had any trouble since.
My guess is there's an algorithm for rpm and voltage output, and the underdrive pulley causes the car to not put out as many volts for a given rpm so the code sets and you get the annoying message.
I turned mine off a long time ago and haven't had any trouble since.
it started 3 days ago..Thanks a lot for the excellent explanation Joe! much appreciated..
Melting Slicks
Joined: Oct 2008
Posts: 3,355
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From: Beverly Hills, MI
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 264
From: St. Louis, MO
St. Jude Donor '08
Zombie, happy to pass along the solution!
Melting Slicks
Joined: Oct 2008
Posts: 3,355
Likes: 11
From: Beverly Hills, MI
I'm not doubting it works, I was just wondering if there was a cal-constant that could be changed (ie. is the threshold calibratable/changeable)? I am ignorant on this stuff when it comes to late model Vettes, so I was looking for options. Any education would be greatly appreciated!
Racer
Joined: Sep 2007
Posts: 333
Likes: 27
From: East Coast
"Service Charging System"
Possibly someone can correct me if I'm wrong, but I also read(here I think) that this can be cause by the use of unsheilded plug wires causing EM interference with the voltage regulator. I get the same message, don't have an UD pulley and have had the alternator replaced with no change, still get the message.
