C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

SYS Light?

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Old May 13, 2006 | 02:46 PM
  #1  
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Default SYS Light?

A little history: problem with the digital part of my 1990 dash, where I couldn't see all of the LCD's. Occurred every other winter and fixed itself the next summer. Last summer the same thing happened so it isn't a cold weather problem.

About 5 months ago, the driver side power window motor died and was replaced. Since then, the LCD's in the dash worked.

I only drive the car once/twice a month and lately I've had to jump the battery to get it started. Had to jump it if I went longer than a week before driving again. Last week I went for a ride after jumping the battery, and noticed "SYS" flashed where the MPG indicator displays.

Any idea what the problem could be with the "SYS" light flashing?

Steve
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Old May 13, 2006 | 03:06 PM
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the SYS is more than likely indicating that dead battery condition.

The SYS is reporting a code from the Central Control Module, or CCM. The CCM is in the dash, under the radio, and it acts much like a traffic cop, handling the information between the Engine Control Module (ECM) and the Electronic Brake Control Module, EBCM. VATS (Vehicle Anti-Theft System) is managed by the CCM, as are interior features, AC, stereo and IP.

At this point, you really need to get the Helm Factory Service manual for your car, www.helminc.com. It will have all the info you need to trouble shoot both this SYS light and the IP problems. I would also not be surprised if you have a code or 2 related to the IP problems.
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Old May 29, 2006 | 07:41 PM
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Default Sys Light

Getting the manual would not help me because I'm not a mechanic. I'll have to pay someone to fix my problem. I don't want to get ripped off at a corvette dealer.

A friend at work said the battery may be the problem. The battery was new about 2+ years ago. But if I have a short related to one of the other two problems, a new battery wouldn't solve my problem, right?

What does IP stand for? Would hooking up the code reader show my problem?

Steve
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Old May 29, 2006 | 08:53 PM
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Originally Posted by scycykjr
Getting the manual would not help me because I'm not a mechanic. I'll have to pay someone to fix my problem. I don't want to get ripped off at a corvette dealer.
The manual can help you from getting ripped off. Even if you don't intend on fixing it yourself, the manual can make you a better informed consumer. Who knows, it might even make you a mechanic, especially after the stealership gets through raping you a few times.

Originally Posted by scycykjr
A friend at work said the battery may be the problem. The battery was new about 2+ years ago. But if I have a short related to one of the other two problems, a new battery wouldn't solve my problem, right?
Maybe, maybe not. A new battery certainly won't fix a short. How good a battery did you start with 2 years ago? Did you maintain it? Modern batteries HATE to be deep cycled. A battey test would be a good idea.

Originally Posted by scycykjr
What does IP stand for? Would hooking up the code reader show my problem?
IP stands for Instrument Panel. A code reader is a good idea, if you have one available. If not a paper clip will do. Remember, "Don't shoot the messenger". You should correct any codes or other obvious problems before you go searching for zebras.

RACE ON!!!
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Old May 29, 2006 | 09:02 PM
  #5  
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Get a Battery Tender & leave it hooked up when your car is parked. Will save you from battery problems. Worked for me. I think they run about $30.00 bucks or so.
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Old May 30, 2006 | 09:34 AM
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[QUOTE=scycykjr]Getting the manual would not help me because I'm not a mechanic. I'll have to pay someone to fix my problem. I don't want to get ripped off at a corvette dealer. [QUOTE]

You can't have it both ways. If you don't like the $150 manual, buy the $20 manual. After a week or so, you'll buy the $150. Besides, what's that....20 minutes with the Service Rep?

[QUOTE]A friend at work said the battery may be the problem. The battery was new about 2+ years ago. But if I have a short related to one of the other two problems, a new battery wouldn't solve my problem, right?[QUOTE]

I recently had a problem with the "Sys". Research my recent posts and you'll easily save $500 at the dealer with a simple paperclip. When's the last time you not only made $500/hour but didn't have to pay the dealer for screwing up something else on the car?

I would suggest that the "Sys" problem seems to have a high coincidence with charging the battery. Possibly the order in which the leads are connected, or whether the charger is plugged in when attaching the leads. You could have other issues, but it seems that the "Sys" is (overly) sensitive to voltage changes in the battery.
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Old May 30, 2006 | 10:01 AM
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Originally Posted by scycykjr
Getting the manual would not help me because I'm not a mechanic. I'll have to pay someone to fix my problem. I don't want to get ripped off at a corvette dealer.
Originally Posted by MDGoth
You can't have it both ways. If you don't like the $150 manual, buy the $20 manual. After a week or so, you'll buy the $150. Besides, what's that....20 minutes with the Service Rep?
Originally Posted by scycykjr
A friend at work said the battery may be the problem. The battery was new about 2+ years ago. But if I have a short related to one of the other two problems, a new battery wouldn't solve my problem, right?
Originally Posted by DMGorh
I recently had a problem with the "Sys". Research my recent posts and you'll easily save $500 at the dealer with a simple paperclip. When's the last time you not only made $500/hour but didn't have to pay the dealer for screwing up something else on the car?

I would suggest that the "Sys" problem seems to have a high coincidence with charging the battery. Possibly the order in which the leads are connected, or whether the charger is plugged in when attaching the leads. You could have other issues, but it seems that the "Sys" is (overly) sensitive to voltage changes in the battery.
Always do your research. You started with posting here at CF, which is good. Now, pay $24 and buy additional information at www.alldatadiy.com (Think of it as an Initiation dues into the wonderful world of Corvette Tax)
You've always heard about mechanics ripping off women at the dealership. You are in the same boat. Do a little research an let the mechanic be aware that you know a little about cars. That way you don't get screwed too...

Last edited by 93*Corvette; May 30, 2006 at 10:05 AM.
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