2009 Buick Enclave Owner's Manual - Page 155

Instrument Panel 3-37 Tire Pressure Light 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 DIC Warnings and Messages on page 3-50 for more information. Stop and check the tires as soon as it is safe to do so. If underinflated, inflate to the proper pressure. See Tires on page 5-37 for more information. When the Light Flashes First and Then is On Steady This indicates that there could 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 System on page 5-44 for more information. Malfunction Indicator Lamp Check Engine Light A computer system called OBD II (On-Board Diagnostics-Second Generation) monitors operation of the fuel, ignition, and emission control systems. It ensures that emissions are at acceptable levels for the life of the vehicle, helping to produce a cleaner environment. If the vehicle has a tire pressure monitoring system, the tire pressure light provides information about tire pressures and the Tire Pressure Monitoring System. The light should come on briefly as the engine is started. If it does not, have the vehicle serviced by your dealer/ retailer. This light comes on when the ignition is on, but the engine is not running, as a check to show it is working. If it does not, have the vehicle serviced by your dealer/ retailer.