GM Service Manual Online
For 1990-2009 cars only

Your vehicle may have an Enhanced Traction System (ETS) 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 reduces engine power and may also upshift the transaxle to limit wheel spin.


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This light, located on the instrument panel, will come on when your Enhanced Traction System is limiting wheel spin.

You may feel or hear the system working, but this is normal.

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 Enhanced Traction System operates in all transaxle shift lever positions except park, neutral or reverse. But the system can upshift the transaxle only as high as the shift lever position you've chosen, so you should use the lower gears only when necessary. See Automatic Transaxle Operation .


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This light is located on the instrument panel cluster.

When the system is on, this light will come on to let you know if there's a problem, or if the system has been turned off.

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 Enhanced Traction System on. But you can turn the system off if you prefer.

To turn the system on or off, press the traction control button located on the instrument panel. In order to effectively "rock" the vehicle, you will need to turn off the traction control system.

When you turn the system off, the Enhanced Traction System warning light will come on and stay on. If the Enhanced Traction System is limiting wheel spin when you press the button to turn the system off, the warning light will come on - but the system won't turn off right away. It will wait until there's 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 Enhanced Traction System warning light should go off.