Wildsau

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

hcbph

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.

Wildsau

(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, ...

hcbph

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.

ChumpVette

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.

aklim

Which one? I think this is for an 86-87

Wildsau

Hi Aklim
Indeed this is the one
Any idea ?

81c3

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?

aklim

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

Wildsau

81C3 yep sorry my mistake, ANTI LOCK !

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 ...

Wildsau

81c3 will check all of these ... problem appeared after suspension and brake work indeed !

FelixP

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!

Wildsau

Hi FelixP ... sorry to hear that if you find the solution please share ... have a nice we

81c3

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.

aklim

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.

Wildsau

81c3 ok will start with cleaning the sensors I already found a video on how to will keep you informed thkx

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.

vette196

unobtainium.....

aklim

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