GM Service Manual Online
For 1990-2009 cars only

Your vehicle may have a Traction Control System (TCS) that limits wheel spin. This is especially useful in slippery road conditions. The system operates only if it senses that one or both of the front wheels are spinning or beginning to lose traction. When this happens, the system works the front brakes to limit wheel spin.


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This light will come on briefly when the ignition is turned to ON along with the anti-lock brake system warning light. This light will blink when your Traction Control System is limiting wheel spin.

You may feel or hear the system working, but this is normal. This light will also come on when the anti-lock brake system is working.

If your vehicle is in cruise control when the enhanced traction system begins to limit wheel spin, the cruise control will automatically disengage. When road conditions allow you to safely use it again, you may re-engage the cruise control. See Cruise Control .

The Traction Control System operates in all transaxle shift lever positions. But the system can upshift the transaxle only as high as the shift lever position you have chosen, so you should use the lower gears only when necessary.


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This light will come on briefly when the ignition is turned to ON along with the anti-lock brake system warning light.

When the system is on and the parking brake is fully released, this warning light will also come on to let you know if there is a problem.

When this warning light is on, the system will not limit wheel spin. Adjust your driving accordingly.

To limit wheel spin, especially in slippery road conditions, you should always leave the Traction Control System on. But you can turn the system off if you prefer.


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To turn the system on or off, press the TCS button located on the console below the shift lever.

When you turn the system off, the Traction Control System warning light will come on and stay on. If the Traction Control System is limiting wheel spin when you press the button to turn the system off, the warning light will come on, but the system will not turn off right away. It will wait until there is no longer a current need to limit wheel spin.

You can turn the system back on at any time by pressing the button again. The Traction Control System warning light should go off.