Question about 2002 Pontiac Grand Am

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ABS light and trac control light come on shortly after driving

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THE MOST LIKELY PROBLEM IS THAT A WHEEL SPEED SENSOR IS DEFECTIVE, BUT THERE ARE FOUR, IN ORDER TO DETERMINE WHICH ONE IS DEFECTIVE YOU WILL NEED THE DEALER TO TEST THE ABS SYSTEM FOR TROUBLE CODES.

Posted on Jul 16, 2009

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I don't understand the whole traction light thing. my car always says trac off-except when it says low trac and slides like it's on ice.


TAKE CAR TO A GARAGE OR DEALERSHIP HAVE THE ABS BRAKES AND TRACTION CONTROL CODE SCAN.YOUR ABS BRAKE SYSTEM WILL COME ON ADJUSTING BRAKE PRESSURE TO AVOID A SKID.THAT WHY LOW TRAC LIGHT COMES ON. MOST OF THE TIME WHEN YOU SEE LOW TRAC LIGHT DRIVING ON DRY ROADS PROBLEM IS IN THE ABS BRAKE UNIT OR BAD WHEEL SPEED SENSOR.

Jul 08, 2011 | 1999 Oldsmobile Alero

1 Answer

My trac light says trac off, and my abs light is on. what does that mean? I have a 1999 grand am Pontiac.


the trac light is the traction control, the abs light means the antilock brake system is not functioning properly. the trac control is no issue. the abs will not cause the brakes to fail but they will lock instead of pulsing.

Mar 31, 2011 | Pontiac Grand Am Cars & Trucks

2 Answers

The ABS lite, No Trac Lite and Service engine lite keep coming on


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

Mar 22, 2011 | 2001 Pontiac Grand Am SE

1 Answer

I have a 05 impala. Abs/trac light came on with service trac control message. took and had code pulled and was told short in abs cicuit.? thanks for your help.


yes the abs and trac work on the same sensors, could be a bad wire, sensor,have it put on a real time scanner where you can read all the sensors and actuators while driving, easiest way

Aug 23, 2010 | 2005 Chevrolet Impala

1 Answer

Service engin soon , Anti lock brake, & Trac control lights came on while driving 55 mph


CHECK ALTERNATOR OUTPUT.MAKE YOUR VOLTAGE OUT PUT IS 13.5 TO 14.5 VOLTS.IF NOT ALTERNATOR BAD IF ALTERNATOR GOOD THE DEALERSHIP HAS TO HOOK CAR TO DIAGNOSTIC TO CHECK THE ENGINE PCM CONTROLS AND ABS BRAKES AND TRAC.SYSTEM.REASON I SAID ALTERNATOR BECAUSE I SEEN ALTERNATOR GO BAD UNTIL IT OUTPUT WAS LOW CAUSING CHECK ENGINE LIGHT AND ABS LIGHT TO COME ON.

Mar 10, 2010 | 1999 Oldsmobile Alero

1 Answer

Trac off, VSC trac and ABS signal went on while I was driving and won't turn off


Chances are, you have a traction control system that is ABS-controlled, like most vehicles. (The other is transmission-controlled.) For this to occur, an ABS sensor may have gone bad. This will cause those lights to come on and for the ABS/trac system to basically shut down.

You also may want to check the ABS fuse to be sure it isn't something easy (and cheap) like that, which might be at fault.

I hope this helps! :)

Dec 07, 2009 | 2003 Toyota Sequoia

4 Answers

My abs and trac control light go on in my 2003 grand am shortly after putting car in drive.


Probably have a wheel speed sensor setting off light both abs and trac control run off the wheel speed sensor

Sep 17, 2009 | 2002 Pontiac Grand Am

2 Answers

1994 850 wagon trac light and abs light come on while driving


I will bet money that it is the ABS/TRACS module. It is mounted under the master cylinder on the bottom of the ABS unit. These are very, very, very common failures. I have replaced hundreds of them in my career. To answer your other question, the TRACS system uses brakes. For example: in the snow, when the L or R wheel is spinning faster than the opposite, the TRACS will apply brake to the spinning wheel to slow it down to an equal speed. Hope this helps.

Jun 29, 2009 | 1996 Volvo 850

1 Answer

2004 Cavalier-ABS and Trac light warnings


no you need to take it and have the codes pulled on it, the abs system will disable the traction control system.Without knowing what the codes are for the abs system it would not be possible to say what the problem is.

Jun 19, 2009 | 2004 Chevrolet Cavalier

2 Answers

Transmission shifts hard when the trac off light comes on


youll need to scan for transmission codes. the trac off light is a default of the trans going into a default safety mode. Bad speed sensors and simple little bolt on items like that can cause the condition but only way to really nail it is with a computer.

Apr 06, 2009 | 1999 Oldsmobile Alero

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