Question about 2003 Pontiac Grand Prix

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ABS light & trak off light keep coming on. Grinding noise & vibration can be felt on brake peddle. Brakes have been checked. Wheel bearing was replaced on drivers side. Sometimes making a pulsing sound,in front end left side, like something is trying to run.

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It sounds like "False Antilock Mode" to me. Your Antilock Brake Control Module "thinks" that you have a wheel locking up. This is probably caused by a bad wheel sensor. You need to scan the module to find out which one.

Posted on Oct 23, 2009

Testimonial: "Thanks for your help.You have told me more than the "mechanics" I have talked to! I might be on the way to getting this problem fixed."

  • mrealph Mar 31, 2011

    i hope one of you guys can get back to me cuz Im having the same exact problem. I found out I need a new hub for the trac off lights but i cant for the life of me find out whats making that insane grinding sound. It sounds really dangerous and I really need to fix it. Did you ever get it done?

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When appling brakes i sometimes hear grinding and ticking noise and abs light is on


A grinding noise is usually an indication that the brake pads are worn out. You may also have a defective wheel bearing causing this noise and in turn can cause the ABS light to come on due to poor sensor contact. Have the brakes and bearings inspected soon to avoid unnecessary costly repairs.

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When coming to a stop after going at least 20 mph or so once you apply the brake the longer you hold it is when it will happen. you will hear grinding noises and then the brake light comes on and the...


whos checking your brakes? you need to have them checked by a ASE brake certified mechanic and you will never have that problem.
Also have them check the wheel bearings, could be dry and going away will also cause the grinding sound but that wont set the brake light on... take it to a reputable shop and they will find your problem.

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2010 equinox abs stabil trak and all wheel drive off


Why not use you warrantee at the dealer

We can not diagnose a vehicle without it
& you gave us no codes

The point here is you risking damage with a
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All wheel drive I would never get on anything unless
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Stability control


Why are you using the car at all?

Immediately -- any time any vehicle is not
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I was wondering on a alero 99 , i replaced the brakes and a caliper and fixed my brake lines but my abs light is on but it sounds like a airplain when u drive their is no shaking or grinding in the front...


YEP BAD WHEEL BEARING WILL MAKE A ROARING LIKE NOISE WHILE IN MOTION.BAD WHEEL COULD PUT DRAG ON WHEEL WHICH CAUSE ABS LIGHT TO COME ON.YOUR WHEEL BEARING HAS THE WHEEL SPEED SENSOR BUILT INTO IT.SO IF WHEEL BEARING BAD THE WHEEL SPEED SENSOR PART OF ABS BRAKE SYSTEM WILL CAUSE ABS LIGHT TO COME ON IF WHEEL BEARING BAD.MAKE SURE FRONT BRAKE PADS INSTALLED CORRECTLY IF NOT. YOU WILL GET TERRIBLE WHEEL NOISE ALSO.

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First thing with brakes is to check the lining thickness. You can usually see the fronts through the wheel, or look underneath. If you have drum brakes in the back there may be a rubber inspection plug.

But if linings are ok, another risk is wheel bearings. You would then feel it as a vibration in pedal, and through steering wheel if a front bearing.

With the light, have the ABS code read with a ODBCII module. Autozone can do this for free.

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First have the brakes checked, the abs and 4wd lights need to be checked, this is done with a scan tool, the computer stores codes telling you what part of what system has failed this will help in finding the problem, the noise my be a bad wheel bearing and has gotten bad to the point it has damaged the abs sensor and has made the lights come on , this is a guess you will need to have the computer scanned to get the codes. hope this helps, good luck.

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Grinding noise in front end and abs light came on


check wheel bearing play. if the play is excessive it will cause the abs sensor to come away from tone ring loosing signal, illuminating abs light.

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