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

Warning ABS LOCK

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Old Apr 3, 2019 | 02:56 PM
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Default Warning ANTI LOCK

Hi
On my dashboard I now can read the message 'ANTI LOCK', this message does only appear when the engine has started. Do you have an idea where to search ? Thanks for your help

PS : sorry for the mistake i've put previously ABS LOCK

Last edited by Wildsau; Apr 5, 2019 at 12:46 PM. Reason: Error in title :(
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Old Apr 4, 2019 | 12:39 PM
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Might help to give a few more details on the car (like year, engine, transmission and if any mods done to it). I've seen the ABS on mine before but never an ABS Lock.
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Old Apr 4, 2019 | 01:10 PM
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(like year, engine, transmission and if any mods done to it)
Car is C4 1987, convertible, 5.7 V8, 240 HP, no modifications done on the car - full origin
Recently changed suspension kit, brakes hoses, ...
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Old Apr 4, 2019 | 06:53 PM
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Just FYI - I would think that my 86 and your 87 would be pretty close if not identical with one possible exception, that being if yours was an export model. Unless there was something unique with export model, I've never seen anything other than ABS in the past.
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Old Apr 4, 2019 | 09:25 PM
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The light is on because you have a fault in the system. Good news is it is a very basic ABS system. Bad news you need a separate tool to retrieve the codes. The other bad news, it’s probably the ABS computer that is dead.
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Old Apr 4, 2019 | 10:15 PM
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Originally Posted by Wildsau
Hi
On my dashboard I now can read the message 'ABS LOCK', this message does only appear when the engine has started. Do you have an idea where to search ? Thanks for your help
Which one? I think this is for an 86-87


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Old Apr 5, 2019 | 07:14 AM
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Hi Aklim
Indeed this is the one
Any idea ?
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Old Apr 5, 2019 | 08:02 AM
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Originally Posted by Wildsau
Hi Aklim
Indeed this is the one
Any idea ?
So it says ANT LOCK... not ABS LOCK Correct? You say you were recently in there for suspension work & brake hoses. Are you sure each of the sensors are ok and none of the wires were damaged? Are the connectors fully seated male into female? Did you have the problem before the suspension and brake work?
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Old Apr 5, 2019 | 10:46 AM
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Originally Posted by Wildsau
Hi Aklim
Indeed this is the one
Any idea ?
Your Anti Lock system has a fault. You need to have that code read. Ask a dealership if they have the equipment to read and fix it
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Old Apr 5, 2019 | 12:47 PM
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81C3 yep sorry my mistake, ANTI LOCK !
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Old Apr 5, 2019 | 12:49 PM
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hi aklim ... which kind of tool do they need to read this ... I leave in Belgium will be difficult to find a Chevrolet dealer :'( will try ...
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Old Apr 5, 2019 | 12:57 PM
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81c3 will check all of these ... problem appeared after suspension and brake work indeed !
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Old Apr 5, 2019 | 01:15 PM
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I'm in the UK and have the same problem. I am going to start by removing the sensors and cleaning them. Also disconnecting them and checking the resistance. I've done the front, rear is to go. I'm hoping this will solve my problem!
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Old Apr 5, 2019 | 01:45 PM
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Hi FelixP ... sorry to hear that if you find the solution please share ... have a nice we
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Old Apr 5, 2019 | 01:56 PM
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Cleaning the sensors can cure the issue. They are magnetic and attract metal particles from the break pad an rotor wear. Start with the easy stuff and escalate from there... Look for obvious issues, then clean the ends of the sensors. Be careful with them. Youll find the rubber casing can be brittle and fall apart. I have split vacuum line with a razor and slipped it over the wires to create a new protective casing. Use little zip ties to keep them seamed tightly.
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Old Apr 5, 2019 | 02:30 PM
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Originally Posted by Wildsau
hi aklim ... which kind of tool do they need to read this ... I leave in Belgium will be difficult to find a Chevrolet dealer :'( will try ...
I believe the old stuff is read by a Tech One scanner but they may be having one somewhere or have a scanner that will read it.
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Old Apr 5, 2019 | 04:56 PM
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81c3 ok will start with cleaning the sensors I already found a video on how to will keep you informed thkx
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Old Apr 5, 2019 | 05:15 PM
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Originally Posted by Wildsau
81c3 ok will start with cleaning the sensors I already found a video on how to will keep you informed thkx
FYI, like many C4 things, this is made of unobtainium so be VERY careful. Many of the pieces are not in good shape since they are from the dumpster diving attempts.
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Old Apr 5, 2019 | 05:25 PM
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Originally Posted by aklim
FYI, like many C4 things, this is made of unobtainium so be VERY careful. Many of the pieces are not in good shape since they are from the dumpster diving attempts.
unobtainium.....
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Old Apr 5, 2019 | 06:44 PM
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Originally Posted by vette196
unobtainium.....
Sensor is obsolete and NOS is probably long done. Junkyard crap and maybe a diamond in the rough is about all that is left. Condition of junkyard items is hard to say
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