1999 Chevrolet Corvette Owner's Manual - Page 206

yellowblue When this light and the SERVICE TRACTION SYSTEM message are on, the system will not limit wheel spin. Adjust your driving accordingly. The TCS 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 TCS system off if you ever need to. To turn the system off, press the button located on the console. You can turn the system ON or OFF at any time by pressing the TCS switch. The DIC will display the appropriate message when you push the button. Active Handling System (Option) The optional Active Handling System is a computer controlled system that helps the driver maintain directional control of the vehicle in difficult driving conditions. This is accomplished by selectively applying any one of the vehicle's brakes. When you first start your vehicle and begin to drive away (6 mph (10 km/h)), the message ACT HNDLG WARMING UP may be displayed in the DIC, the instrument cluster light will be on, and a chime will sound. This is normal. You can acknowledge this message by pressing the RESET button. The Active Handling System performance is affected until the message, WARM UP COMPLETE, is displayed in the DIC. The ACTIVE HANDLING message will come on when the system is operating. See "Driver Information Center Messages" in the Index for more information. You may also feel or hear the system working. This is normal. 4-10