Trac off / Service Traction control system

Read our most common Traction Light Problem question and answers.

This light or indicator on the dash or message center is usually related to the
ABS system, and sometimes to the
check engine light.

When this is on, the traction system is disabled. A problem in the ABS system is usually the cause, and would have
to be scanned for codes.

Sometimes and engine problem that causes a
check engine light will also cause the TRAC OFF light to come on
certain vehicles. In this case, the PCM would have to be
scanned for codes and repaired first. Then the traction
control system codes can be cleared.
9-26-10
Where is a tcc solenoid in a 2000
Pontiac Grand Prix.
Comments
9-27-10
It is in the side cover of the transmission along with the other solenoids.
12-4-10
I have changed my brake pads and rotors on the front and pads on the back but
my service
traction system light still comes on. What else can I do. What else is
there to do to service the system? I  have a 2002 Montana Pontiac.
The pads and rotors have nothing to do with the traction
control system. You most likely have a problem in the
ABS. A possible bad wheel speed sensor. You need to
have the
ABS computer scanned for codes.
3-28-10
Grinding noises when I press down on brakes and when I turn wheel hard left or
right  service traction system message comes on.
Get your front brakes and wheel bearings checked.
4-26-11
I have a 2002
Buick Rendezvous and I have a Service Traction system light that
comes on after a few minutes it goes off but my abs light and trac off light stays
on.. What would cause this and is it expensive to fix.
5-1-11
my front wheel wobbles  for a short time, but then rides ok. Is this caused by the
abs sensor.
Could be one of many problems in the ABS system that
causes this. Need to have codes scanned first.
Sounds like a bad tire. Have them checked or rotated to
see if that makes a change.
5-27-11
My ml 320 traction light come on when i move say 20mph.
5-28-11
My abs traction off service engine light pops up all at the same time. The other day
I tried to start my car and it wouldn't start at all. Ended up push starting it, took to a
mechanic and transmission, fuel pump, ECT all ok. He said he couldn't find
anything wrong. Please help explain why my car is doing both of those!
5-28-11
I drive a 2005
Pontiac grand prix GT and while I'm driving reduce engine power
pops on my screen and when this happens once I brake at a light my gas pedal
stops responding in R N D 3 2 1 but responds in Park then my screens shows
service traction control. Then the car starts to roughly idle then shut off and it
takes me a while to get moving again. PLEASE help!
The throttle body on your Grand Prix is electronically
controlled and when it goes bad, the reduced engine
power light will come on and the vehicle will run rough, be
hard starting, etc. Also, you have what is called an
accelerator pedal position sensor that is part of the
accelerator pedal assembly. These will give the same
symptoms when it goes bad, too. Since it did set the light
on, you will have trouble codes stored in your car's
computer. This will help diagnose whether you need a
new throttle body assembly or a new accelerator pedal. It
would most likely need to be checked by a technician.
6-21-11
Monte Carlo, once I turn left or right at times, makes a grudging noise and Service
Traction System light appears, only does this once turning left or right slowly,
almost 80% of the time departing from a parking space as well as parking.
6-27-11
You probably have a bad hub bearing on your
Monte Carlo. These have the wheel
speed sensors built in to them, and when there is a problem the trac light will come
on and usually the abs light as well. You can get the car checked for codes to see
which side is causing you problems. Also check wiring harness to sensor for water
intrusion and corrosion.
7-19-11
2001 cavalier @ road speed engine will lug then Lunge then Trac lite comes on
and stays on,Code says TCC stuck ON,Also @ stop engine lugs a little then is ok.
But Monitor says PCM turned Traction control off. Any Ideas where to look?
8-29-11
have a 2004 Monte carlo the ABS and Traction control light came on after doing a
donut in a field on night. I have at the wheel off and checked the connections.
Could there be a thrown bearing. If so how do i check to see if that is the problem.
9-17-11
I have a 2007 chevy Cobalt SS the 4 door model the traction control light comes
on all the time when I stay at a constant speed of 60-65 how do I fix it
Did you check wiring to all four wheels? You need to get
the computer scanned to find out what the code is. You
are just guessing it is a speed sensor problem. Could be
something else.
You need to get the computer scanned to find out what
problem your car has in then ABS system.
10-5-11
I have a 1998 Ford E-150 Econoline van... I've installed the following rear drum
brakes , wheel solenoids on the driver and passenger side as well as rear brake
lines. Also I installed a new brake line from the front main box where all brake lines
run from " I'm not sure what it's called but it's right under the brake line pump
/ fill reservoir.... Before during and after installing all this... I've test drove it on all
aspect I'm getting the same results, out a 2 block street approx 18 times when I
touch or hit the brake pedal I hear a winning sound kind of like you had. Manual
car & put it in gear with accelerating at the same time, not a grinding sound!!!
That lasts like 2 seconds its as if the brake pedal is rising or building pressure...
Then  immediately following that a knocking / pulsating sound is felt in the brake
pedal slightly heard... It goes through approx 8-12 knocking. Then at the very end
it seems as it's relieved pressure or something. Kind of like when your bleeding the
brakes feeling !!! Does anyone have ideas or recommendations?I'd greatly
appreciate your time and direction. Thank you - William
10-13-11
i have a 2003 Monte carlo have had new brake pads and rotors now my abs and
traction system lights coming on what could the problem be now.
If the ABS light was not on before the brake repairs, it is
possible that the person that did the repairs has
damaged one of the wheel speed sensor harnesses.
11-10-11
I have a 2006 Pontiac Grand Prix GT and I recently had the battery changed.  Now
it is telling me to service traction control, service ABS, and service effortless
steering.  I'm thinking the problem is something to do with the fuse box...  
Considering the fuse box had to be moved change the battery.  Any suggestions?
They may have caused a poor connection under the
fuse box by moving it. This battery is tough to replace.
Check the fuses first.
12-21-11
I have a 2000
Pontiac Sunfire. The Service light, ABS, and Trac off light came on
after a while of driving. I didn't notice anything different while driving or any funny
noises. Whats wrong?
Sounds like an ABS brakes problem. You need to get the
computer scanned for any stored codes first.
2-17-12
I have a Pontiac Aztec. The service traction system light is on. When I press the
brake pedal, sometimes it feels like it's grinding or shaking, and it sort of tries to
push upward under my foot. However, I don't have any trouble stopping, and the
brakes and rotors have just been replaced (replaced after the problem started).
You have a front wheel bearing / speed sensor or wiring
to one of those sensors bad. Pads and rotors have
nothing to do with ABS or traction.
2-20-12
My 2006 Pontiac Grand Prix, my diagnostic codes are P1125, P2125, P2138...do
all 3 codes mean I only need a APP sensor?
Yes all these codes do point to the accelerator pedal. It
is becoming quite a common item fail. But one other thing
to check is a connector that I have seen problems with.
Open the drivers door and on the side of the dash you
will see a panel. Remove that and look for a flat electrical
connector. Disconnect that and look for any signs of
water. It may be actually went or the terminals might be
green with corrosion. Especially check this if you have a
sunroof since we have seen those leak down into that
part of the dash and corrode the connector. If it looks
okay then just replace the gas pedal.
3-13-12
1998
Buick Regal GS symptoms are: bought yesterday - slight creaking noise
when turning at low speed like in parking lots at stop signs etc - fine driving this
morning - coming home today got progressively worse - felt as though there was
less power during initial seconds of accelerate from stop and some chatter in/out
of 1st - took some side roads on errands and the abs light, trac off light and
service engine soon light all came on - removed abs fuses and felt as thought it
was doing the same thing? Put back in and only the low trac light comes on (at
most points of accelerate or when hitting bumps) and still very rough on low speed
turning in both D and R - thinking it is probably a wheel speed sensor but I may
just replace the entire hub assembly because the bearing, hub, sensor, and
reluctor ring all comes in 1 package...whats weird is previous owner replaced the
front hubs in 2010...?
3-20-12
Went to the car wash, afterward service traction control system, service ABS
system came on.  What is the problem?
3-24-12
I have a 2006 Chevrolet Cobalt SS 4-Door Sedan, and occasionally (but not all the
time) my ABS light comes on and I have to restart the car to get it to go away and
then it may or may not work. Further, my traction control light will come on at slow
speeds or in combination with the ABS failure. I read earlier comments and I think it
may be a bad wheel speed sensor. What do you think? Thanks
There was probably some water intrusion into one or
more of the wiring harnesses for the wheel speed
sensors. If this is the case, it can cause corrosion which
will require harness replacement. I'd recommend
scanning the car for codes to see which wheel or wheels
is acting up.
3-26-12
I got a brake line replaced and repaired a year ago. It was leaking brake fluid. It
happen again last Friday,why? This is on a 1995 Ford Contour.
If the new line / hose replaced last year was not just
rubbing on something, then it could be just a cheap part
or contaminated fluid- if you are talking about a rubber
line that is leaking.


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Steven said:
I have a 2001 chevy cavi. The traction control light came on one day, wouldn't go over 20 mph without the RPM going all the way up. I waited half an
hour or so and it was fine. The next day I drove maybe a mile and the light came back on, followed by hard shifting, and died four times. Took it to the
mechanic, he said that he isn't for sure what it is because it didn't happen for him. Now, 2 days ago, the no traction light came on again but none of
the other stuff happened besides hard shifting, but nothing as bad as before. I don't want to mess up my car by keep on driving it but it's my only way
to school and work. Had the mechanic check the computer and there was a O2 code and a Line code? I don't know.. Any one know what this could
be? I have looked all over the internet, some people are saying the TPS, but a lot of people are saying that replacing that is a waste of money
because the actual problem is the trans solenoid needs to be replaced...? HELP

TechMech said:
Reply @Steven, With the code you described as "Line", this sounds like it may be a "line pressure code", but not sure. I would need the exact code
number. Something like PXXX, where X is numbers. When ever the transmission has a problem, it causes the traction light to come one. Reading
forum threads is usually useless. It is full of people giving advice to what may or may not have fixed their car. There are way too many things that can
cause your problem, and most problems, but guessing at parts is a bad idea. Just because a sensor fixed a traction light on 100 peoples cars on the
internet does not mean a thing. There are 15 million cars on the road and 20 things that can cause any given problem. A code # will help greatly.

ramirez said:
Hello I have a 2009 chevy hhr and the
check engine light has been on for a couple of weeks and just Yesterday the check engine light came off and
the esc came on and my car started to brake by itself when ever  I accelerated, I left my car of for a couple of hours and now it says esc service. Now I
only have engine and transmission  Warranty and im sure it wont cover it...but what could this be since I might have to fix it.what could this be?
Thanks...

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Traction System TRAC OFF Light Questions And Description