My service traction system light keeps coming on

The AdvanceTrac system counteracts oversteering and understeering by reducing power and/or applying brakes to specific wheels. This is done by the use of electronic sensors that communicate with the Powertrain Control Module (PCM) regarding steering performance and stability in adverse weather conditions. The are several components that are necessary for the AdvanceTrac system to work properly.
Anti-Lock Brake System-When/if the brakes lock up, this may cause a loss of control and the vehicle may slide. The anti-lock brake system prevents this from happening by preventing the brakes from locking up, as well as preventing oversteering and/or understeering when the vehicle starts to slide.
Traction Control System-The traction control system works by reducing engine speed and determining which wheel to apply brake pressure to in order to prevent the vehicle from sliding.
Electronic Sensors-The Powertrain Control Module (PCM) receives information from electronic sensors regarding the rotational speed of each wheel, the horizontal motion of the vehicle, and the vertical motion of the vehicle.
If the "service AdvanceTrac" warning indicator light comes on in the dashboard, this could be an indication of several issues.

• A faulty wheel-speed sensor
• A faulty steering-angle sensor
• A faulty rotational-speed sensor
• An issue with the steering rack
• Something that is lodged in one of the wheels
• The AdvanceTrac system needs to be reprogrammed

Get the trouble codes read again. The traction control system gets its information from the all four wheel speed sensors, the steering angle sensor and the yaw sensor, so it's a fairly complicated system. You don't want to be guessing why the system is kicking in. Cutting power is what it's supposed to do when it thinks you've lost stability, so there's obvious something wrong with the sensors or wiring harness.

Service Stabilitrak, Traction Control lights ON, alone with check ...

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Jul 9, 2012 - I have a 08 Equinox with 79000 miles on it, for the last few weeks or soI've been having the service traction control/ service stabilitrak light ... HELP - Service Stabilitrak & Service Traction Control - Chevrolet ...
Aug 30, 2011
Service Traction Control - Stabilitrak and ABS light, Help ...
Feb 12, 2011
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Has anyone ever had the service stabilitrak, service traction ...

You will need scanned the ABS Module to know exacvtly what fault code is stored there; with this copde number we could send you othyer details to solve it. Generally is the Speed Wheel sensor go to bad or loss connections.

Keep in touch.

Hi,the traction control light coming up means there is a fault detected in the system and a scan tool will be required to learn what fault has been detected. Possible steering angle sensor, wheel speed sensor or brake pressure sensor since the light comes up when making turns or when backing up. Faults are to be checked and proper diagnostic procedures carried out before parts replacement remedies.....

There are wheel speed senors that tell the computer about wheel slippage. One or both are malfunctioning or the wiring is chaffed.

most likely a bad wheel speed sensor

have a technician drive it with a scan tool and monitor all VSS

I suspect one if off
You can also confirm this buy trying to lock up the brakes in a safe location

if ABS activates early/late or not at all this too is a sign of a VSS concern

The steering wheel position, wheel speed sensors, and ABS systems are all used to provide traction control. You likely have a failure of one or more systems. Scan the ABS system and it will provide codes to help the diagnosis. Wheel speed sensors fail often, and it is likely one or more of these is contributing to the problem.

The Enhanced Traction System warning light may come on for the following reasons:

If you turn the system off by shifting to SECOND (2) or FIRST (1), the warning light will come on and stay on. To turn the system back on,shift to THIRD (3) or AUTOMATIC OVERDRIVE

If the traction control system is affected by an engine-related problem, the system will turn off and the warning light will come on.

If the Enhanced Traction System warning lightmcomes on and stays on for an extended period of time when the system is turned on, your vehicle needs service. Adjust your driving accordingly..

abs pump motor control fault...dealter got parts from wrecker (lot cheaper) already spent close to $2000.00 to repair traction/abs..messages kept coming on so they finally diagnosed the above problem...we will see...