2004 Pontiac Grand Prix Owner's Manual - Page 246

Traction Control System (TCS) If your vehicle has the 3800 supercharged V6 engine it has 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 front wheels are spinning or beginning to lose traction. When this happens, the system works the front brakes and reduces engine power to limit wheel spin. This symbol will appear on the DIC screen when the system is active, along with the TRACTION CONTROL ACTIVE message. This symbol, along with the message TRACTION CONTROL OFF will also display in the DIC for three seconds when the traction control system is not active. When these symbols and messages appear on the instrument panel and the Driver's Information Center (DIC), the system will not limit wheel spin. Adjust your driving accordingly. The traction control system automatically comes on whenever you start your vehicle. To limit wheel spin, especially in slippery road conditions, you should always leave the system on. But you can turn the traction control 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 You Are Stuck: In Sand, Mud, Ice or Snow on page 4-32. You may feel or hear the system working, but this is normal. When the traction control system is not working, this symbol will appear on the instrument panel cluster. 4-10