96 LT1: SYS Intermittantly Flashing

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Dec 20, 2001 | 08:55 PM

96VegasVette

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Safety Car

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From: South Carolina

96 LT1: SYS Intermittantly Flashing

I finally got my vette back from the dealership today, well....everything is good to go with one exception. I'm Intermittanlty getting a "SYS" flasing in the LCD readout. I took it back to the dealership after I noticed it, well, low and behold it wouldn't do it for them. But.....he agreed with me that it was probally low battery voltage from the 3 months of inactivity. The starter turns a little slower then it used to but nothing major...just noticeable. I don't want to take the damn thing back up there this week, do you think it's just a poor surface charge on the battery causing this. Owners manual says it's an electrical problem. The car was in for an engine replacement so there's always a chance something else could be causing it...........any suggestions?

Dec 20, 2001 | 09:35 PM

DougSilver

Burning Brakes

Joined: Feb 1999

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From: Encino CA

Re: 96 LT1: SYS Intermittantly Flashing (96VegasVette)

I just went through the same thing on my 95. Brought it in for my servicing just before my 6 year warranty ran out. Got the car back and the next day battery was dead. After charging I got the blinking sys and brought it back to the dealer. Ended up getting a new battery. Seems the what causes the blinking sys is the dreaded mistake of bringing the car to the dealer for servicing. :eek:

Dec 20, 2001 | 09:35 PM

04Z16

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From: Warrick County IN

CI 3-4-5-6-7-8-9-10 Veteran

Re: 96 LT1: SYS Intermittantly Flashing (96VegasVette)

What was the battery charging at when you first started it up? I think the SYS light will go on for an overcharge as well as a undercharge condition.

Dec 21, 2001 | 12:40 AM

JIMBO55

Instructor

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From: JACKSON NJ

Re: 96 LT1: SYS Intermittantly Flashing (96GrandSport)

what would a battery overchage look like?? what volts etc and how do you correct it--my batt gauge reads about
16 volts and i am getting the "SYS' flash also thanks jimbo

Dec 21, 2001 | 04:14 AM

Ramrod92

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From: Olive Branch (Memphis suburb) MS

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Re: 96 LT1: SYS Intermittantly Flashing (JIMBO55)

If the CCM(central control module) {not the ECM(electronic controll module) which deals with the engine emmision controlls} detects a fault in one of the systems it monitors, it will flash the SYS. One of the most common faults is the battery voltage being out of a set range for a certain amount of time. Jimbo, if you are getting 16 volts, the voltage regulator is shot. It is in the generator(alternator), so you're looking at a new or rebuilt one. Give Jeff Kopp a call for one. Probably looking at about $140. :cheers:

Dec 21, 2001 | 09:11 AM

JIMBO55

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From: JACKSON NJ

Re: 96 LT1: SYS Intermittantly Flashing (Ramrod92)

ramrod thanks for the info, i will have the alt. checked out jimbo

Dec 22, 2001 | 02:40 PM

96VegasVette

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From: South Carolina

Re: 96 LT1: SYS Intermittantly Flashing (96VegasVette)

Update: it was the battery that was causing this for me. Thanx for all of the input everyone. :cheers:

Dec 22, 2001 | 05:55 PM

kwhman

Intermediate

Joined: Sep 2001

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From: Valdosta GA

Re: 96 LT1: SYS Intermittantly Flashing (96VegasVette)

I too got hit by the mysterious "back from the dealer" bad battery!! I had no problems with the battery until I had the 30,000 mile service done. When I got it back it ran great but I noticed it was starting a little slower. Two weeks later I notice the "sys" showing up intermittantly. One week later the Vette won't start. I just put a new battery in it and so far no sign of trouble (other than my frustration level over what you have to go through to change the battery in a '94 Vette!).

- Steve :confused: :flag