"SYS" blinking on display???
Safety Car
Joined: Apr 2000
Posts: 4,644
Likes: 4
From: Texas, GOOD OLE USA
Re: "SYS" blinking on display??? (tropicaltim)
Any ideas what this might mean. Not all the time but it is quite frequently, How do I find out what it means, and how do I fix it. Car seems fine to me??
Team Owner
Joined: Apr 2000
Posts: 27,818
Likes: 8
From: CT
Re: "SYS" blinking on display??? (behnevette)
Have you replaced the stereo system lately? If not, it's probably your battery.
Le Mans Master
Joined: Feb 2000
Posts: 9,061
Likes: 214
From: Epping NH
Re: "SYS" blinking on display??? (JD 90 383)
There is numerous things it could mean. It is telling you the ECM has register an error code. Usually when the battery voltage drops below a certain level that will cause it and seems to be the most common problem. You can try disconnecting the battery for 10 seconds to allow the ECM to clear and then wait to see if it comes back. The ECM stores codes forever so it could be a old code.
Team Owner
Joined: Dec 2000
Posts: 21,094
Likes: 282
From: Phila., PA burbs
Re: "SYS" blinking on display??? (bac22)
I just had the same thing after installing an aftermarket chip in my car. I took it back out repositioned it and the SYS message went away. :confused:
Cruising
Joined: Aug 2001
Posts: 10
Likes: 0
From: Cary NC
Re: "SYS" blinking on display??? (TA)
I had the same issue when the stock stereo was replaced. The way I understood the problem was that the original stereo basically, through voltage, told the onboard computer that the stereo is there and alive. Replacing the unit left an unused harness wire that made an open circuit. The installer had to install a resistored wire to compensate... btw, it took the Chevy dealership to diagnose the problem so that the sound system installer could fix the issue... lots of fun...
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Racer
Joined: Jun 2001
Posts: 369
Likes: 0
From: Jacksonville Fl
Re: "SYS" blinking on display??? (tropicaltim)
My 92 had the SYS light flashing occasionally, like 3 blinks , then off for a while, 3 blinks etc. Another forum member told me it was an undocumented feature telling me the battery is getting weak.
I tested battery, replaced it, and no more SYS light.
I tested battery, replaced it, and no more SYS light.
