99 buick century anti-lock brake light off/on

SOURCE: 1999 Buick century

You will be best off bringing the car in for service. If the anti-lock signal comes on, it means that your ABS system has a fault and you do not have anti-lock brakes functioning. When the light comes on the car runs on your brakes alone, no anti-lock.

To check the codes and the ABS system, the car should really be serviced.

Good luck!!
EJ Kudelka

SOURCE: I have a 2002 buick

One of the things you will want to check is your speed sensors, some times they will also cause your ABS light to come on, and they relate to your Transmission electronics that is why the Check Engine light comes on.

SOURCE: Olds Alero 99 Left front hub assembly

It sounds more like it's the wheel speed sensor that is part of the hub/bearing assembly. Since you have had the hub replaced many times I would look for the electrical connectors for the wheel speed sensor as the problem. An easy no cost fix.

BTW...GM has issued a service bulletin for the hub/bearing kit that states NOT to use the old style nut that comes in some kits as it will cause premature bearing failure due to it's design and the high torque requirements. The correct shaft spindle nut part number to use is p/n 10289657 and is torqued to 178 nm. The GM bulletin number is 03-04-18-001.

SOURCE: 2002 Buick Century anti-lock brake problems

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

SOURCE: anti lock and trac off lights on in a 2003 buick

Probably pointing to one or more of your wheel speed sensors having problems. Have the ABS codes scanned on the vehicle. This should help give direction on where to look next. Also, check tire pressure, as uneven pressure can cause this condition.