GM Service Manual Online
For 1990-2009 cars only

The vehicle may have a traction control system 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 rear wheels are spinning or beginning to lose traction. When this happens, the system applies the brake(s) at the affected wheel(s).

The bottom light on TCS on/off button will come on when the TCS is limiting wheel spin. The system may be heard or felt while it is working, but this is normal. TCS will function at speeds up to about 25 mph (42 km/h).

TCS may operate on dry roads under some conditions. When this happens, a reduction in acceleration may be noticed. This is normal and doesn't mean there's a problem with the vehicle. Examples of these conditions include a hard acceleration in a turn, an abrupt upshift or downshift of the transmission or driving on rough roads.

When the light in the top of the TCS button is on, TCS is off and will not limit wheel spin. Adjust your driving accordingly.

The light in the top of the TCS button will come on if TCS is turned off by pressing the TCS on/off button.

The light may also come on if a problem has been detected in either the traction control system or the anti-lock brake system.

The traction control system automatically comes on whenever the vehicle is started. To limit wheel spin, especially in slippery road conditions, the system should always be left on. But the traction control system can be turned off if needed. Turn the system off if the vehicle ever gets stuck in sand, mud or snow and rocking the vehicle is required. See Rocking Your Vehicle to Get It Out for more information.


Object Number: 829654  Size: A3

To turn the system on or off, press the traction control button located on the instrument panel.

If the TCS button was used to turn the system off, the light in the top of the button will come on and stay on. TCS can be turned back on at any time by pressing the button again; the light should go off.

Adding non-dealer/non-retailer accessories can affect the vehicle's performance. See Accessories and Modifications for more information.