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

SYS on a 91 L98----2

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Old Jul 18, 2006 | 08:54 AM
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Default SYS on a 91 L98----2

lets try again. is there nobody out there who has had this problem before. sys just left to the speedometer starts to flash when turn on ignition, and when crank. engine runs well, bit lean maybe. no mods.
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Old Jul 18, 2006 | 09:34 AM
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Originally Posted by vette079
lets try again. is there nobody out there who has had this problem before. sys just left to the speedometer starts to flash when turn on ignition, and when crank. engine runs well, bit lean maybe. no mods.
You should wait some days before posting again the same question.
If you search for SYS in the title in the "Search" folder you should see at least 300 posts..
I have the SYS from day one on my '90 .
SOmetimes it disappears for half a day then it come on again.
Have you a Custom Hi-Fi system?
It has something to do with the CCM.
-Beppe-
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Old Jul 18, 2006 | 10:24 AM
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Default SYS fglashing

I have the same problem with my 92. The only problem with mine is sometimes the car starts and sometimes it will start for a second then shut off. I turn the key off and try again and it will start. I had the ignition switch and chip checked and it's ok. I'm afraid to drive it and shut it off that it may not start again.
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Old Jul 18, 2006 | 01:17 PM
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SYS means there is a code stored in the Central Control Module.
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