GM Service Manual Online
For 1990-2009 cars only

The 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 reduces engine power and may also upshift the transaxle to limit wheel spin.


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The LOW TRAC light will come on while the TCS is limiting wheel spin. See Low Traction Light .

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

If the vehicle is in cruise control when the traction control system begins to limit wheel spin, the cruise control will automatically disengage. When road conditions allow safe use of the cruise control, it can be used again. See "Cruise Control" under Turn Signal/Multifunction Lever .

The TCS operates in all transaxle shift lever positions. But the system can upshift the transaxle only as high as the shift lever position that was chosen, so use the lower gears only when necessary. See Automatic Transaxle Operation .


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While the TCS is on, the TRAC OFF light could come on the instrument panel cluster to show that the TCS is not limiting wheel spin.

See Traction Control System (TCS) Warning Light . Adjust your driving accordingly.

To limit wheel spin, especially in slippery road conditions, you should always leave the TCS on. But you can turn the system off if you ever need to. The TCS should be turned off if the vehicle ever gets stuck in sand, mud or snow and rocking the vehicle is required. See Rocking Your Vehicle in If Your Vehicle is Stuck in Sand, Mud, Ice, or Snow .


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To turn the TCS on or off, press the TRACTION button located directly behind the automatic transaxle shift lever on the instrument panel .

When the TCS is turned off, the TRAC OFF warning light will come on. It will disappear when the TCS is turned back on. If the TCS is limiting wheel spin when the TRACTION button is pressed, the TRAC OFF light will come on and the TCS will turn off right away.