2009 Cadillac CTS-V Owner's Manual - Page 187

Engine Coolant Temperature Gage 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. United States Canada When the Light is On Steady This indicates that one or more of the tires is significantly underinflated. A tire pressure message in the Driver Information Center (DIC), can accompany the light. See DIC Warnings and Messages on page 3-57 for more information. Stop and check the tires as soon as it is safe to do so. If a tire is underinflated, inflate to the proper pressure. See Tires on page 5-63 for more information. This gage shows the engine coolant temperature. If the engine coolant overheats the engine coolant temperature warning light will come on. See Engine Overheating on page 5-38 and Engine Coolant Temperature Warning Light on page 3-40 for more information. 3-41