Owner Checks and Services

At Each Fuel Stop ► Check the engine oil level. See Engine Oil . Once a Month ► Check the tire inflation pressures. See Tire Pressure . ► Inspect the tires for wear. See Tire I ...

Additional Maintenance and Care

Your vehicle is an important investment and caring for it properly may help to avoid future costly repairs. To maintain vehicle performance, additional maintenance services may be required. It is ...

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Information and assistance
NOTICE It is recommended that when you sell or dispose of the vehicle, the programed transceiver buttons be erased for security purposes. For information on the range of available compatible ...

Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if the v ...

Parking brake (red)
USA.    Canada.    Illuminates when the parking brake is correctly applied. If the lamp flashes, a fault has been detected. Seek qualified assistance urgently. ...