2008 Chevrolet HHR Owner's Manual - Page 169

Enhanced Traction System Warning Light For vehicles with the Enhanced Traction System (ETS), this warning light should come on briefly as you start the engine. Electronic Stability Control (ESC)/Traction Control System (TCS) Indicator/Warning Light This light is located in the center of the instrument panel cluster. If the warning light does not come on, have it fixed so it will be ready to warn you if there is a problem. If the warning light is on and not flashing, the ETS system may 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 your vehicle requires service. If the ETS has been disabled, wheel spin will not be limited. If the warning light is on and flashing, the ETS is actively working. The LOW TRACTION DIC message will also appear when the system is actively limiting wheel spin. See Enhanced Traction System (ETS) on page 4-9 and DIC Warnings and Messages on page 3-48 for more information. For vehicles that have the Electronic Stability Control (ESC) system or the Traction Control System (TCS), this warning light should come on briefly when the engine is started. If the warning light does not come on then, have it fixed so it will be ready to warn you if there is a problem. This light, along with the appropriate Driver Information Center (DIC) messages, indicates when the ESC system and the TCS are working or are disabled. 3-37