GM Service Manual Online
For 1990-2009 cars only

If your vehicle has the 3100 V6 or 3800 V6 engine and anti-lock brakes, 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.


Object Number: 807055  Size: A1

This light will come on when your Enhanced Traction System is limiting wheel spin. See Enhanced Traction System Warning Light .

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" under Turn Signal/Multifunction Lever .

The Enhanced Traction System operates in all transaxle shift lever positions. 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 .


Object Number: 808332  Size: A1

This TRAC OFF warning light will come on to let you know if there's a problem.

See Enhanced Traction System Warning Light . 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 ever need to. You should turn the system off if your vehicle ever gets stuck in sand, mud or snow and rocking the vehicle is required. See "Rocking Your Vehicle To Get It Out" under If Your Vehicle is Stuck in Sand, Mud, Ice, or Snow .


Object Number: 824537  Size: A2

To turn the system on or off, press the TCS button on the far right end of the Driver Information Center (DIC) or the trip computer (if equipped).

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 and the system will turn off right away.

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