Need solution to ABS Inop!
Need solution to ABS Inop! I have an ABS Inop light that only comes on after starting the car and once the car moves forward a few feet. Then it of course stays on the whole time I am driving. I have replaced the rear ABS sensor, to no avail. Any other suggestions?
I can get one cheap at the local junkyard, I'll probably try that first, if not, then I assume front wheel sensor?
What is the resistance supposed to be at the sensor for the front wheel sensors?
What is the resistance supposed to be at the sensor for the front wheel sensors?
The worst thing you can ever do is start guessing without even knowing the code. Some cars can even throw abs lights from a burnt out brake bulb so just replacing modules and sensors wont do any good until you get the code. I would not buy a junkyard abs module because the gm modules are prone to failure. You can pull the cluster apart and take the bulb for the abs light out if its the light that bothers you.
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I'll rebleed everything and check everything out again.
I did forget to mention the problem that it is doing under braking as well. The pedal travels far on the first push when driving, sometimes causing the BRAKE light to come on, then on the 2nd push it stiffens up and the light will come off, usually I can feel (not hear) what I would describe as a click in the pedal when the brake light goes off on the 2nd push. Does this help to narrow down what to check?
I did forget to mention the problem that it is doing under braking as well. The pedal travels far on the first push when driving, sometimes causing the BRAKE light to come on, then on the 2nd push it stiffens up and the light will come off, usually I can feel (not hear) what I would describe as a click in the pedal when the brake light goes off on the 2nd push. Does this help to narrow down what to check?
Joined: May 2006
Posts: 3,452
Likes: 3
From: somewhere that doesn't get snow
I'll rebleed everything and check everything out again.
I did forget to mention the problem that it is doing under braking as well. The pedal travels far on the first push when driving, sometimes causing the BRAKE light to come on, then on the 2nd push it stiffens up and the light will come off, usually I can feel (not hear) what I would describe as a click in the pedal when the brake light goes off on the 2nd push. Does this help to narrow down what to check?
I did forget to mention the problem that it is doing under braking as well. The pedal travels far on the first push when driving, sometimes causing the BRAKE light to come on, then on the 2nd push it stiffens up and the light will come off, usually I can feel (not hear) what I would describe as a click in the pedal when the brake light goes off on the 2nd push. Does this help to narrow down what to check?
under slow braking my pedal would get really hard and the LOW TRAC light would come on, after doing this 2-3 times the brake pedal would almost go to the floor and then pop back up and then the ABS INOP would come on and stay on. it was like my car was thinking it needed to activate the ABS for a dry pavement slow speed stop.
Joined: May 2006
Posts: 3,452
Likes: 3
From: somewhere that doesn't get snow
i doubt it's your rear channel causing the problem but i suppose it could be. i do know in my case new rotors and pads all the way around cured the problem completely and this was something like 6 years ago.
This is different and things aren't adding up. The BRAKE light and ABS INOP mean different things and shouldn't be related.
When did the two lights start coming on and what did you do to the car before and after? ie: did this start after you changed the brakes?
What is non-stock with regard to the wheels and braking system? Are your custom wheels the same size as stock? Are all four tires the same?
When did the two lights start coming on and what did you do to the car before and after? ie: did this start after you changed the brakes?
What is non-stock with regard to the wheels and braking system? Are your custom wheels the same size as stock? Are all four tires the same?
The brake problems began with my engine swap and have been ongoing since then. The car sat for 2 years before I did the engine swap, and since swapping the engine, the brakes have been acting up.
Wheels were 10-spoke SS with 275/40R17 all around, front brakes are C5, rear are stock. Another problem I have is that the parking brake cable was always stiff, hard to pull up, and doesnt hold the car very well. Cable just snapped trying to pull it up about a week ago.
Wheels were 10-spoke SS with 275/40R17 all around, front brakes are C5, rear are stock. Another problem I have is that the parking brake cable was always stiff, hard to pull up, and doesnt hold the car very well. Cable just snapped trying to pull it up about a week ago.
Its is likely something to do with your C5 brakes since they are not what originally came on your car. If it happened after an engine swap it could also be a bad ground possibly. You really need to just pay someone to find out the code that is set. Its crazy to just speculate about the problem. There are way too many components in your ABS system to just shotgun parts.
I know for a fact it's not the C5 brakes, they have been on the car for about 7 years or so. I have looked for a disconnected or bad ground and I haven't found any. I will have to scan it to see what code it is throwing.
