2002 buick abs, trac off lights come on

It is the anti lock brake system. First, look at the ABS. It will come on for a bad wheel sensor or broken wire. This will also throw the trac light on. ABS is on because the computer senses the one tire is trying to stop or lock up. this releases the brake pressure. On the traction light(which should also throw the ABS light), one tire is spinning faster that another. This can happen on gravel, sand or snow/ice. When you turn the key on, do you have an ABS light on, then goes off? Same with a trac light. If you do, then you have a bad wheel sensor. Scan it and replace it.

Most likely that one of the ABS Wheel Sensors is disconnected or got damaged during repairs that you made. Check connectors for ABS wheel sensors at front brakes. If look ok, you need to check computer codes to know which sensor is damaged and replace sensor.

Grinding sound ? May be worn brake pads, down to the metal against the rotors. Vibration, could be a warped rotor, wheels not balanced, worn outter tie rods. The ABS light will come on if the tooth ring is broken, giving you a pulsing pedal. That is what the ABS does.

There is an abs sensor in the left front wheel that is the common culprit on 97-2002 park ave, century and regal

This looks like a failed or faulty connection to the speedometer/ cluster. Try removing the cluster and reinstalling. Sometimes the connections become loose for vibration and simply need reseated.

it sound like it to me that the alternator need to be tested and the brakes need to be chechout give these websites a try www.alldatadiy.com and www.autozone.com if all fails stop by your local library and get your hands on a Haynes auto repair manual for your car wish you the best of luck Michigan Man.

Sound's like the abs is trying to engage usually a wheel speed sensor or wiring to sensor cuases that.Have your repair shop check for abs codes and go from there.

There's speed sensors at each wheel. You may have got some contamination in front of one of them... sounds like the abs is trying to compensate for un equal speed at each wheel... and something may be blocking a proper read at one of the wheels...

These two circuits are linked together and you probally need a ABS MODULE and possibly a rotor and they are pretty cheap on e-bay

i recently had this problem too, except i had all the lights on (ABS, service vehicle, trac-off, AND service engine) they are all easy to fix without spending more than 20-30$ for labour (depending how much your mechanic charges you) mine did it for free and he found out why the engine light is on afterwards too. so to fix all these lights (abs, trac-off, and service vehicle you MUST get another ABS cable (i went to a garage, they were towing a GM vehicle to the junk yard so i grabbed some scissors and cut BOTH abs cables on each side (good thing i did because one was bad) and braught them to my mechanic. the reason the lights come on is probably a defect or in my case my mechanic said it was salt buildup in the wires (on the drivers side) so he cut the wire off and rewired the new one and BOOM all the lights came off (service vehicle, abs, and trac-off) now for my service engine it says catalytic converter but im trying to put some fuel system cleaner to help it out i read somewhere that this is a defect of the car, so if you dont have that light yet, SELL your car ASAP for as much as you can get for it (after fixing the lights of course) and always google (car name+recalls) in the search bar to see what youre getting into, take care