2010 Hummer H3T Owner's Manual - Page 130

5-16 Instruments and Controls The light comes on when the TCS and the StabiliTrak system is turned off. If the TCS is off, wheel spin is not limited. If the StabiliTrak system is off, the system does not assist in controlling the vehicle. Turn on the TCS and the StabiliTrak system and the warning light turns off. See StabiliTrak System on page 9‑53 and Traction Control System (TCS) on page 9‑52 for more information When the Light is On Steady This indicates that one or more of the tires are significantly underinflated. A tire pressure message in the Driver Information Center (DIC), can accompany the light. See Tire Messages on page 5‑25 for more information. Stop as soon as possible, and inflate the tires to the pressure value shown on the tire loading information label. See Tire Pressure on page 10‑51 for more information. When the Light Flashes First and Then is On Steady This indicates that there may be a problem with the Tire Pressure Monitor System. The light flashes for about a minute and stays on steady for the remainder of the ignition cycle. This sequence repeats with every ignition cycle. See Tire Pressure Monitor Operation on page 10‑53 for more information. Traction Control System (TCS)/StabiliTrak® Light The StabiliTrak system or the Traction Control System (TCS) indicator/warning light comes on briefly while starting the engine. If it does not, have the vehicle serviced by your dealer. If the system is working normally the indicator light will then go off. The indicator/warning light flashes while the StabiliTrak or TCS system is working to control the vehicle on a low traction surface. If the TCS warning light comes on and stays on while driving, the vehicle needs service. Tire Pressure Light For vehicles with a tire pressure monitoring system, this light comes on briefly when the engine is started. It provides information about tire pressures and the Tire Pressure Monitoring System.