2005 Pontiac Grand Prix Owner's Manual - Page 251

Traction Control System (TCS) If the vehicle has the 3800 Supercharged V6 engine, it 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 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, along with the TRACTION CONTROL ACTIVE message, comes on the DIC screen when the system is active. This symbol, along with the message TRACTION CONTROL OFF will display in the DIC for three seconds when the traction control system is disabled. If there is a problem with the system, the service traction system will also appear on the DIC. When these symbols and messages appear on the instrument panel and the DIC, the system will not limit wheel spin. Adjust driving accordingly. The traction control system automatically comes on whenever the vehicle is started. To limit wheel spin, especially in slippery road conditions, always leave the system on. But the traction control system can be turned off if needed. The system 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 to Get It Out on page 4-33 and If You Are Stuck: In Sand, Mud, Ice or Snow on page 4-32 for more information. You may feel or hear the system working, but this is normal. When the traction control system is not working, this symbol will come on the instrument panel cluster. 4-9