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

antilock light on 87

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Old Jul 21, 2012 | 02:23 PM
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quinten
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Default antilock light on 87

So the other day my Antilock light came on for a few seconds then went off. I didnt think much of it then a few days later it came on and now stays on. I have a scanner for ecm codes and I know i cant use this for abs codes. I have cleaned front wheel sensors (they were dirty) have done rear yet but will. I have checked the fuse marked brakes, checked the ground in the b pillar. I checked all the wires to the wheel sensors and dont see any issues. I know with the older bosch systems its a pain to find abs problems. I found rockauto had some relays and modulator relays so i ordered them incase those are the problems. Any ideas if I am missing something... Yes the brake fluid is filled about 3/4 of the way to max so its not low fluid. Thanks for the help
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Old Jul 22, 2012 | 12:18 PM
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Originally Posted by quinten
So the other day my Antilock light came on for a few seconds then went off. I didnt think much of it then a few days later it came on and now stays on. I have a scanner for ecm codes and I know i cant use this for abs codes. I have cleaned front wheel sensors (they were dirty) have done rear yet but will. I have checked the fuse marked brakes, checked the ground in the b pillar. I checked all the wires to the wheel sensors and dont see any issues. I know with the older bosch systems its a pain to find abs problems. I found rockauto had some relays and modulator relays so i ordered them incase those are the problems. Any ideas if I am missing something... Yes the brake fluid is filled about 3/4 of the way to max so its not low fluid. Thanks for the help
How are your wheel bearings in general? All it takes is for the sensor and the reluctor wheel to be off by a fraction and hat sucker can come on. There used to be a monster of a GM sensor/tool set to figure out what was wrong with ABS in those days, but none of us are going to have our hands on it.
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Old Jul 26, 2012 | 01:22 PM
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quinten
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Good news it was just the relay. Picked up a used one from vette2vette and lights off.
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