'95 coupe auto. While driving "SYS" will flash three times then go back to mpg readout. Owners manual states "may be a problem with your electrical system" It seems to drive fine. Recently changed OEM stereo to aftermarket using wiring harness from Crutchfield. The cruise control was not engaging last time I drove the car.
I was going to un hook stereo first, then check connections for cruse control. Any other areas to check when it warms up a bit.
Thanks
GTSpeed98

 

Did you install resistors on the stereo lighting circuit?
If not SYS will flash because system is looking for circuits that are not there with aftermarket setups

http://www.corvetteforum.net/c4/dave8476/index4.shtml

 

Thank youfor your quick response. No I didn't. Do I put it inline on the wire for lighting and what value resistor? When I bought the wire harness and antenna extension from Crutchfield nothing was mentioned about the resistor.

 

Looked through bulletin, noticed the it relatetes to '90 - '93 with electronic air which pertains to my '92. My '95 has manual air. The aftermarket radio has a circuit board no wires.

 

http://forums.corvetteforum.com/c4-t...sys-light.html
http://forums.corvetteforum.com/1559553067-post3.html