2010 Chevrolet Cobalt Owner's Manual - Page 171

Enhanced Traction System (ETS) Indicator/Warning Light For vehicles with the Enhanced Traction System (ETS), this light serves as an indicator and warning light. See Enhanced Traction System (ETS) on page 5‑12 and DIC Warnings and Messages on page 4‑40 for more information. Electronic Stability Control (ESC)/ Traction Control System (TCS) Indicator/Warning Light For vehicles with the Electronic Stability Control (ESC) system or the Traction Control System (TCS), the indicator/ warning light comes on briefly when the engine is started. If it does not, have the vehicle serviced by the dealer/ retailer. If the system is working normally the indicator light goes off. If this light is on while certain DIC messages display, this indicates that the ESC and TCS are not working or are disabled. This light comes on briefly while the engine is started. If it does not, have the vehicle serviced by your dealer/ retailer. If the system is working normally the indicator light then goes off. If the indicator/warning light is on and not flashing, the ETS system could have been disabled. Check all related Driver Information Center (DIC) messages to determine whether the system has been turned off or if the system is not working properly and the vehicle requires service. If the ETS has been disabled, wheel spin is not limited. If the indicator/warning light is on and flashing, the ETS is actively working. The LOW TRACTION DIC message also appears when the system is actively limiting wheel spin. 4-25