LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Abs Inop???

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Old Apr 18, 2008 | 05:33 PM
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Default Abs Inop???

Ok what the hell...my wife to my 94 Z to work this morning...usual day, but when she came home she said that the ABS INOP light was on.... so my question is that what would cause this to happen?? any help would be much appreciated.
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Old Apr 18, 2008 | 05:37 PM
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this happened to me also....it just turned on a couple of days ago....and whenever its on my left brake light and my left turning signal dont work....ive been noticing that the light comes on when i use my right turning signal.


i already checked the fuses and the relays...
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Old Apr 18, 2008 | 05:40 PM
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hmm...mine isnt related to the turn signals...it just came on....stayed on for a bit and went off. its been doing that all day.
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Old Apr 18, 2008 | 05:51 PM
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Mine does this sometimes too. It just started doing it. I don't understand either. My sister's Z also has this problem except hers never goes off. Is there an abs sensor that could go out causing this issue?
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Old Apr 18, 2008 | 05:55 PM
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i guess...damn abs sensor
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Old Apr 18, 2008 | 06:07 PM
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check if both of your brake lights are working
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Old Apr 18, 2008 | 06:37 PM
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mine is on also but both my brake lights arent working but the one on the spoiler is working any ideas i checked the bulbs also they are good.
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Old Apr 19, 2008 | 02:17 PM
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the ABS INOP is pissing me off
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Old Apr 19, 2008 | 02:29 PM
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Ok just wait a sec I've got the troubleshooting diagram somewhere.

Well...I have it here. What is the DTC. I've got the big green book with the ABS section open.
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Old Apr 19, 2008 | 02:40 PM
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Originally Posted by nomoneyz
Mine does this sometimes too. It just started doing it. I don't understand either. My sister's Z also has this problem except hers never goes off. Is there an abs sensor that could go out causing this issue?
Yes...there are ABS sensors on each wheel, hopefully thats what wrong with yours if you've checked all the ABS sensors. If its not the sensors, its the module itself.
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Old Apr 19, 2008 | 03:00 PM
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Deff. check the 3rd brake lights. GM was stupid and in the mid 90's they made the ABS module ground through the lights. Or so I heard....kind of a stupid, yet somewhat believeable idea, but only cause its GM.
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Old Apr 19, 2008 | 03:17 PM
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Mine did that and it ended up being the EBCM
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Old Apr 19, 2008 | 03:51 PM
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mine is doing it randomly because the front passenger side sensor wire was burned my my header. i need to re solder a new section and move it away. its grounding or shorting to the body and header.
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Old Apr 19, 2008 | 05:24 PM
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Make sure all your grounds in the engine compartment have good connections, there is one on the passenger side on the wheel well, just above the batter, i had this happen to me, i cleaned it up and tightened it and the light went off. If its still doing it you might have to go around to each wheel speed sensor and clean the connectors or make sure the headers did not burn the wires that go to the front wheel speed sensors.
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Old Apr 19, 2008 | 06:41 PM
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Originally Posted by Revelation Z28
mine is doing it randomly because the front passenger side sensor wire was burned my my header. i need to re solder a new section and move it away. its grounding or shorting to the body and header.
ya knaow that could be whats happening to mine...i just had my headers put on not too long ago...im gonna check that out and see what happens
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Old Apr 19, 2008 | 06:46 PM
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i bought mine with it disconnected. its never been off as long as ive had the car. dunno why and havent hooked it up
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Old Apr 19, 2008 | 06:56 PM
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Both my ABS and my APS or whatever it is are on. The switch for the APS does not work but I have not looked into the ABS... guess I should I just have been busy working on the interior and cleaning up the Rice mine seemed to come with.

I will watch this thread to see what some of the common causes you gusy find or if Grounding turns out to be it.
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Old Apr 19, 2008 | 07:02 PM
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well...i really should take som pics of what the former owners did to my car...its absolutley rediculous
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Old Apr 19, 2008 | 07:35 PM
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Why do I think I know how you feel... with all the lighting, extra live speaker and amp wiring, cut wiring... etc etc etc.

I hate to see cars such as ours treated in such a mannor.
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Old Apr 26, 2008 | 07:34 AM
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any updates?
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