Question about 2002 Buick Century

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I have a 2002 buick century that the service engine light and trac light and disc break light comes on and off. I can shut my car off and restart it and it will stay off for maybe 10 or 15 mins and then sometimes will come right back on. I have new breaks and rooters on the front and this did not seem to help.

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I had the same problem and found out it was a bad electrical connection on both front wheels for the ABS sensors. It seems the contact pins in the connector are so small that they fail easily. Disconnect them, spray contact cleaner on both ends, then reconnect them. I took them apart and put them back together several times to insure good contact. Should solve the problem unless something else is involved. Good luck!

Posted on Oct 04, 2009

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1 Answer

Trac off


does the abs light come on as well a bad wheel speed sensor will trigger both lights you need a scan tool to see what is going on

Aug 15, 2012 | 2002 Buick Century

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My problem is the same as most others. Anti-lock brakes, service engine soon, trac off lights on. Before they would come on intermittemtly bu recently stays on. Called GM last week and was told to take it...


Your anti lock brake light is part of your traction contol lights so that is most likely a wheel sensor and would be a separate problem from your check engine light.
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Jul 03, 2011 | 2002 Buick Century

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My service engine soon light, anti-lock break light, and my trac off light are on. My car also makes a kind of grinding noise sometimes. I was told that the sensor was set off by spinning tires. It is...


2 different problems
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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

Jun 16, 2010 | 2001 Buick Century

1 Answer

Abs light, trac off light,and vehicle service soon comes out


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
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Oct 25, 2009 | 2002 Buick Century

1 Answer

The vehicle service soon, abs and trac off occasionally light


it sounds like u have a wheel bearing goin bad or signal droppin out now and then,next time the light comes on stop by your mechanics if u can and see if he can scan it,do not shut it off once the light comes on so he can retieve the code,this type of failure is hard to catch sometimes,hope this helps

Sep 06, 2009 | 2002 Buick Century

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The ABS system including pump may be faulty which is quite common. You will have to take this to dealership or mechanic. Either there is a bad pump or a fault in the electrical system

Jul 20, 2009 | 2005 Buick Century

1 Answer

What does trac off light refer to? service engine and trac off light comes on.


Trac is the control that doesnt let your tires spin when they are not making contact with the road. Just by having your emergency brake on will light up the trac light. It also come on with your abs. If you driving on a slick road and you jam on your brakes and the tires slide a little mine will say low track on my car.

Aug 11, 2008 | 1997 Buick Century

7 Answers

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

Jul 12, 2008 | 2002 Buick Century

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