OnStar Services

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Wheels and Trim—Aluminum or Chrome
Use a soft, clean cloth with mild soap and water to clean the wheels. After rinsing thoroughly with clean water, dry with a soft, clean towel. A wax may then be applied. Keep the wheels clean using ...

Cleaning the Display
Notice: Using abrasive cleaners when cleaning glass surfaces could scratch the glass. Use only a soft cloth and do not spray cleaner directly on the system as it could affect the mechanical parts. ...

Transmission Messages
SERVICE TRANSMISSION This message displays if there is a problem with the transmission. See your dealer. SHIFT TO PARK This message displays when the transmission needs to be shifted to P (Park). ...