Question about Pontiac Grand Am

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Why is my ABS/service engine soon and my trac turns off but if I turn the trac off when I start the car these lights do not come on? There are no codes in the computer . I have a 2001 Pontiac Grand Am, 3.4L

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  • Expert
  • 306 Answers

Sounds like a broken wire at one of the abs sensors or a bad sensor

Posted on Feb 06, 2010

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  • Pontiac Master
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This car needs to be scanned with a scanner capable of reading body codes, if the light is on the BCM or body control module has found something wrong,get the code and get back to me. most scanners at the parts stores will not read ABS codes. Hope this helps get back to me Thanks Ray, please rate my fix?

Posted on Feb 06, 2010

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Posted on Jan 02, 2017

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SOURCE: i have a 2000 pontiac grand am gt - the abs, low

the most common thing that causes this problem, other than spinning in mud, is a wheel speed sensor. the best thing for you to do is get your car scanned. autozone offers free scanning. i have seen many hub bearings go bad, come loose and cause this. if the problem comes and goes the hub is likely the culprit. i have also seen cracked abs rings cause this at higher speeds, i have also seen the harness running to the rear wheels torn out from running over tree limbs. i would definitely start with a scan to narrow down possibilities and save you money done by guess work. you can try jacking up each wheel and shaking to ensure that all bearings are tight. if you have access to a oscilloscope you can backprobe each sensor while spinning the wheel and find which one is breaking down.. hope this was helpful... dustang

Posted on May 09, 2009

csmock132
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SOURCE: abs light, trac light, service engine soon light 2001 Pontiac Grand Am

Sounds like you have a bad wheel speed sensor. You need to have it scanned. Since it's been sitting, it might just be a bad connection to one of the speed sensors.

Posted on Jun 02, 2009

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1 Answer

Service engine, abs, trac off


The service engine light does not affect the abs.You most likely have a broken wire in your abs system which is affected by suspension movement.A code reader which does abs codes will tell you which wheel circuit is turning on the abs light.When there is no abs available the track will turn off.

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When the Service engine soon, ABS and TRAC lights are turned on at the same time the computer control units for the engine and the ABS/TRAC systems has sensed a fault in the electronic controls of the engine and/or the emission system and the ABS and Traction Control system (part of the ABS system). When this happens you will seldom feel the car engine run any different or the car drive any different. There are about 200 possible faults that turn the Check Engine light on, the fault in your car is likely a part called the VSS sensor to know for sure what the problem is you must have the system tested; Kragen and Autozone parts stores do this testing for free

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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

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Abs light ,trac off, and service engine soon would come once in awhile, but now its on all the time. my turn signals sometimes won't work either.


These are differnt issues. The Trac off light is on because the ABS is on most common reason is because of a bad abs sensor which is part of the wheel bearing unless there is any damaged wiring.Your check engine light is on for another reason there could be many possibilities.The turn signals may be the hazard switch or turn signal switch. You should take to a repair facility that has a scan tool to tell you what are causing the abs and engine lights to come on.

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1 Answer

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You most likely have a problem with the ABS brake system. First, check your brake fluid level as many vehicles have a fluid level switch that monitors brake fluid level and if the level is low it can turn off the ABS and turn on all those lights.[ABS is part of the Trac control] If that is good then you may have a failing wheel speed sensor, wiring, or a problem with the ABS controller itself which would require having someone connecting to and reading the ABS service codes with a scan tool to identify what the system saw that caused it to turn itself off. Brakes are a very important safety item so you should get it repaired as soon as possible!

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After start up, engine, trac off, abs, and service engine soon light come on. vehicle runs normal.


trac off abs light , the problem is in one of the wheel bearing, that is where the sensor is.

Jul 26, 2009 | 2000 Pontiac Grand Am GT

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

2 Answers

Abs light, trac light, service engine soon light 2001 Pontiac Grand Am


Sounds like you have a bad wheel speed sensor. You need to have it scanned. Since it's been sitting, it might just be a bad connection to one of the speed sensors.

Jun 01, 2009 | 2000 Pontiac Grand Am GT

2 Answers

Pontiac 2002 se: veh soon light, trac light, abs light comes on


I have this same problem and had it checked. It is the wheel sensor. Mine is the passenger front right wheel sensor. According to the mechanic I take it to the GrandAm's are known for this. The part is about $40.

Oct 07, 2008 | 2002 Pontiac Grand Am

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