i have a 1990 corvette. on the dissplay for speed and gas. it has a E M per gallin has just startede to flash SYS. it will flash to EMper gallin but the same 15.2 flashes. the range is working but also flashes SYS.can you help me on this? Thank you for your time.

Optional Information:
1990 Chevrolet corvette 350ci

Already Tried:
nothing/p>