2000 Chevrolet Suburban Owner's Manual - Page 153

The TRACTION OFF light may come on for the following reasons: D If you turn the system off by pressing the TAS on/off button located to the left of the steering wheel, the light will come on and stay on. To turn the system back on, press the button again; the light should go off. Malfunction Indicator Lamp (Service Engine Soon Light in the United States or Check Engine Light in Canada) D If you move the shift lever to FIRST (1), the light will come on and stay on to indicate that the Traction Assist System is off. This is normal operation. To turn the system back on, move the shift lever back to a position other than FIRST (1); the light should go off. See "Traction Assist System" in the Index. automatic engagement feature has been turned off. To turn the system on, press the TAS off/on button; the light should go off. To turn the automatic engagement feature back on, see "Traction Assist System" in the Index. United States Canada D The light will come on and stay on if the TAS Your vehicle is equipped with a computer which monitors operation of the fuel, ignition and emission control systems. This system is called OBD II (On-Board Diagnostics-Second Generation) and is intended to assure that emissions are at acceptable levels for the life of the vehicle, helping to produce a cleaner environment. The SERVICE ENGINE SOON or CHECK ENGINE light comes on to indicate that there is a problem and service is required. Malfunctions often will be indicated by the system before any problem is apparent. This may prevent more serious damage to your vehicle. This system is also designed to assist your service technician in correctly diagnosing any malfunction. D If the Traction Assist System is affected by an engine-related problem, the system will turn off and the light will come on. Have your vehicle serviced. 2-77