Question about 2005 Chevrolet Cavalier

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Abs trac off and service lights on. test showed that left front wheel speed sesor was bad. replaced it and lights still on. is there a way to reset system or is something else wrong?

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  • 206 Answers

I have had new sensor/wheel bearings bad right out of the box. Once the sensor is replaced the system will reset itself. I have also seen a broken wire on the plug that connects to the sensor. If you have an electrical meter ohm the 2 prongs on the sensor on the bearing see if the circuit is bad

Posted on Mar 14, 2009

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5 Answers

ABS and Trac Off lights are on along with service trac. control message. tried to scan with my snap-on scanner and i get a NO COMMUNICATION message


check for power at obd2 port for scanner possible blown fuse ,the abs and trac off will come on if you have abs sensor bad most common issue,

Dec 10, 2014 | 2005 Chevrolet Impala

1 Answer

The ab. and tracking light come on and go off and back on


This soundslike a bad speed sensor, you will need to have the computer scanned for codes, the computer turns on the light and stores the code, the code will tell you what has gone wrong and with some testing you can find the problem, the most common problem could be a bad wheel speed sensor, both light are on due to the abs problem because the trac control uses the abs speed sensors to watch wheel speed so if the computer sees a problem with the abs it turns off the trac and turns on the light. after the abs is repaired the trac light will go out, start by having the codes read, a scan tool is needed to get the codes, there are many auto part stores that scan the computer for free but i dont know if they scan for abs codes, you will have to check that out. good day.

Sep 09, 2011 | 2005 Chevrolet Cavalier

2 Answers

What does trac off button means and the abs light on


the trac off light is designed to come on with the ABS light on this vehicle. you need to have the ABS system tested for codes.Do Not be alarmed the brakes will work just not the ABS system.most of the time the codes are a wheel speed sensor.

Jul 14, 2011 | 2003 Chevrolet Impala

1 Answer

My 2005 chevy cavalier has a service engine, abs, and trac off light on. sometimes the low trac light comes on when in the reverse position, then switches to the 3 lights when put in the drive position....


The ABS and traction off lights usually indicate a bad wheel speed sensor. I can't remember if the service light came on the three times mine went. The most common one to fail is the left front.

Try this cheap fix first.

Remove the left front wheel speed sensor, clean and reinstall it. They are magnetic and some times road debris will block the sensor. If that was the problem the ABS and traction lights will go off when you start the car.

Your second option is to have the shop scan the vehicle trouble codes, usually this costs an hours labor.

Hope this helps

Nov 07, 2010 | 2005 Chevrolet Cavalier

1 Answer

Hummin sound when turning to the left no trac light comes on and the brake pedal pushes back


You have a partially broken wiring harness to one of the front wheel speed sensors. As the wheels turn back and forth they tend to fatigue the harness and cause an intermittent brake in the wire , this makes the computer think that you have lost traction and triggers the ABS/Traction control system. You'll need to have the computer scanned for abs codes and figure out which sensor is showing as bad. If the problem is not bad enough yet, the code may not have stored. Either way, you will have to get an ohmmeter and carefully test the resistance of the speed sensor harnesses to find out where it is broken. An alternative is to just replace the wiring between the sensor and where it fastens to the frame. Any place that the wire has to move when the wheels are being steered is suspect.

Mar 16, 2010 | 2002 Buick Century

2 Answers

2003 Grand AM Service engine soon light is on, ABS light is on and Traction control light is on. I suspect it is one of the wheel sensors? And if so which one?


You would need a scaner to pull data out of your computer, go into the A.B.S. mode scroll to wheel speed sensor, while some one drives the car for you, check MPH on front and rear wheels sensor, the one that show 0 MPH is the bad sensor. Replace and recheck, Also check harnness first.

Nov 16, 2009 | 2003 Pontiac Grand Am

2 Answers

Abs light and brake light are on. also service


You can test the wheel speed sensors by unhooking the connectors and put ohmeter test leads on the sensor terminals should read around 1100-1600 ohms also the connectors themselves were bad for wires breaking inside the insulation at the connectors from flexing when the wheel is turned back and forth..Note excessive wheel bearing noise from bad bearings have also been known for interferring with clean abs signal also causing abs codes good luck

Nov 06, 2009 | 2004 Pontiac Grand Am

2 Answers

2002 buick abs, trac off lights come on


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

Jul 29, 2009 | 2002 Buick Century

2 Answers

ABS, brake, trac control, service engine soon light came.


I'm sorry to say that you will need to see a dealer or repair shop so they scan your ABS for trouble codes first and then find your problem.

Jul 24, 2009 | 2000 Oldsmobile Intrigue

4 Answers

2004 Cavalier, Service light, ABS light, Trac Off light


It is the wheel speed sensor jumper harness more than likely on the driver side. They replaced the orginal with a newer better one but never issued a recall.

Jul 11, 2008 | 2004 Chevrolet Cavalier

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