GM Service Manual Online
For 1990-2009 cars only

The vehicle has 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 more of the wheels are spinning or beginning to lose traction. When this happens, the system works the brakes and reduces engine power to limit wheel spin.


Object Number: 1545635  Size: A1

This light flashes while the traction control system is limiting wheel spin.

The system may be heard or felt while it is working, but this is normal. This light may also come on after extended heavy braking indicating the brakes have become too hot to limit wheel spin.

TCS 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 TCS can be turned off if needed. The system should be turned off if the vehicle ever gets stuck in sand, mud, ice, or snow and rocking the vehicle is required. See Rocking Your Vehicle to Get It Out.


Object Number: 1278095  Size: A1

TCS can be turned off by pressing the StabiliTrak/TCS button, located next to the gear shift lever.

When TCS is turned off, the StabiliTrak/TCS warning light comes on the instrument panel cluster and TRACTION CONTROL OFF briefly displays.

The traction control system can be activated again by pressing the traction control button. While the traction control system is activated, the StabiliTrak/TCS warning light comes on the instrument panel cluster and TRACTION CONTROL ON briefly displays.

If the system is limiting wheel spin when the button is pressed, the StabiliTrak/TCS warning light comes on the instrument panel cluster. The system will not turn off until there is no longer a current need to limit wheel spin. Turn the system back on by pressing the button again. If the light does not come on, TCS might not be working and the vehicle should be serviced by your dealer/retailer.

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