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Basic informtion about your car is mansatory to be able to get accurate diagnosis for problems. Things like year, manual or auto trans and any mods you may have...
Just cause they all look alike doesn't mean there were NOT significant changes across the 8 production years of the C5....
Put the info in your posts asking for help or better yet in your profile.
sorry ur right
its a 99 FRC 6 speed wilwood brakes and ss lines, procharger, full exhaust
i haven't done any diag yet. but i checked the pins and the master cyl (level sensor) adjusted the pins and on the valve (Brake lines going to it) below master cyl. (round 3 pin connector) adjust pins also.got the light this morning.
also i replaced the brake fluid DOT 4 (Blue) (had this fluid for a few years 10 years in a metal can) a lil while ago but idk if i had this problem before. had alot of code until i replaced the battery havent gotta the c1255 code back.