1999 buick century abs lights on trac light or no trac directional makes a loud noise when i try to use it and now it only starts once & awhile with the key

My Buick had an ABS problem and since I had new brakes installed my mechanic disconnected the wiring. You still have full brakes and they will work fine but the ABS part won't work. Since i did not want to spend a lot of money I drove it that way for about three years. ABS is just an addition to help but not all cars have it.

No--- it will not

Not while ANY OBD2 Faults codes are set
or monitors not ready

Diagnose the abs system & the imbedded trac
control

Your the first in 3 years to ask if you should park it

Very good question & best way to think

You can drive it until you check for codes
& then have the ABS Braking System diagnosed
as trac control is a near useless part of it.

May just have a bad Wheel Speed Sensor

with these lights on then you will have to see what codes are in the abs and pcm module to find out what the problems are.the abs module will activate when the traction control lights come on.this can also cause a noise and pulsate in the brakes pedal.

could be a bad wheel bearing for the abs and trac light not sure about engine light you need to have someone scan the abs and ck engine light

You will need to have the computer scanned for codes, the codes will tell you where the problem is, when the abs light is on it will turn on the other lights the ser light and trac light, once the abs if repaired the other lights will clear, the most common problem with these is one of the wheel speed sensors go bad, hope this helps.

I just put in new fron pads in my 2000 buick century and the track off and the anti lock brake light and the service engine soon stays on

Guys i have a 2001 buick century. i ran into that problem figured for sure it was a wheel sensor but it wasn't if you can get a friend with a scanner to pin point which wheel it is then you're half way there. you said when you turn the wheel the light comes on well you know it one of the front wheels for sure, i was with my brother one of us was looking at the dash and the other was moving around the connector to let the other know when the light came on lots of posts spoke about the wires breaking at the point where they bend that wasn't the case. sure enough it was the wires going into the connector as you turn the wheel left and right the wire looses contact for a fraction of a second causing the abs light to come on. so check the connectors at each wheel under the cv joints.
hope this helped
good luck guys

BAD WHEE BEARING AND PROBABLY THE PLAY FROM THE WHEEL BEARING HAS DAMAGED THE SPEED SENSOR FOR THE ABS

It is going through a self test. I've had a couple of cars like this. 2 of the 3 that I remember ened up having a bad ABS modual.