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

Fixed SYS light on LCD display

Thread Tools
 
Search this Thread
 
Old Jan 25, 2009 | 07:44 PM
  #1  
Lincoln7's Avatar
Lincoln7
Thread Starter
Heel & Toe
10 Year Member
 
Joined: Dec 2008
Posts: 17
Likes: 0
From: Windsor,VA ........ 94 6spd
Default Fixed SYS light on LCD display

So I didn't realize it was a problem seeing the SYS light come on every 10 seconds or whatever on the LCD dash display. I assumed it was just the computer sending info to my dash or something. Then I saw a post about it here and that it's usually the battery or aftermarket radio. I have an aftermarket radio and searched to find that I can install resistors on two wires and it fixes the prob. I pulled out my radio and it had a dimmer/illumination wire on the aftermarket harness. I searched the forums to see what to hook this wire to but found nothing. Only info on where to install the resistors. So I decided to install the dimmer wire to the two wires where the resistors should go(purple w/white + gray w/black). I bent a paperclip in half and put each end in the appropriate slots of the harness connector and used a butt connector to attach to the dimmer wire. All seems to be good now. And when I place my thumb over the little light sensor under the driver's right side vent duct the LCD display dims properly(when the lights are on). Hope this can be useful to someone.
Reply
Old Sep 4, 2010 | 04:45 AM
  #2  
cdsmith's Avatar
cdsmith
Instructor
10 Year Member
 
Joined: Aug 2001
Posts: 191
Likes: 0
From: Athens GA
Default

Can SYS just be removed from the computer? I know it's not in the main engine management computer but can the "body" computer be modified?
Reply
Old Sep 4, 2010 | 05:39 PM
  #3  
andrew94c4's Avatar
andrew94c4
Intermediate
 
Joined: Mar 2009
Posts: 25
Likes: 0
From: Tampa Florida
Default

I have been needing to do this for a long time but because of lack of knowledge basically i could not understand how to do it. I even bought the resisters to figure it out on one of the posts diagrams but it is like german to me. I am usually a step by step and pictures guy but I do believe I can figure it out with all the info you posted Thanks alot I may need to come back and pick your brain when I get in there tomorrow.
Reply
Old Sep 6, 2010 | 09:36 AM
  #4  
Crackersauce's Avatar
Crackersauce
Heel & Toe
10 Year Member
 
Joined: Aug 2010
Posts: 23
Likes: 0
Default

Originally Posted by andrew94c4
I have been needing to do this for a long time but because of lack of knowledge basically i could not understand how to do it. I even bought the resisters to figure it out on one of the posts diagrams but it is like german to me. I am usually a step by step and pictures guy but I do believe I can figure it out with all the info you posted Thanks alot I may need to come back and pick your brain when I get in there tomorrow.
Just wondering: Does your car have the auto climate control for the air conditioning? I read on another thread in here that if you have the auto a/c then you don't have to do the resistor thing. My car has the auto a/c buttons, so I decided to cut out the resistors and try it. Sure enough, it works! No SYS light, no problems.
Reply
Old Sep 6, 2010 | 09:42 AM
  #5  
Crackersauce's Avatar
Crackersauce
Heel & Toe
10 Year Member
 
Joined: Aug 2010
Posts: 23
Likes: 0
Default

Originally Posted by cdsmith
Can SYS just be removed from the computer? I know it's not in the main engine management computer but can the "body" computer be modified?
It might be possible to do that with a scan tool, but I don't know for sure.
Reply
Old Sep 6, 2010 | 11:27 AM
  #6  
andrew94c4's Avatar
andrew94c4
Intermediate
 
Joined: Mar 2009
Posts: 25
Likes: 0
From: Tampa Florida
Default

No it has the good ol push button style with no digital read out. I am really hoping I can get out there today and see if I can finially get rid of it. When I did the radio and speaker change i made sure that i cut no wires only used adapters to plug into the factory wiring for installation of original equipment if wanting in the future. And to avoid any unneccesary problems like i dont know.. Flashing lights in the dash. Thanks again
Reply

Get notified of new replies

To Fixed SYS light on LCD display





All times are GMT -4. The time now is 05:52 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE