OnStar Services

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How to Detect a Tamper Condition
If is pressed and the horn sounds, an attempted break-in has occurred while the system was armed. If the alarm has been activated, the THEFT ATTEMPTED message will appear on the DIC. See A ...

Passenger Side
The removal of the air filter/cleaner assembly and base is required for the replacement of one of these bulbs: 1. Open the hood. See Hood. A. Air Duct Clamp B. Connector Lock C. Sensor Co ...

Engine Oil Messages
CHANGE ENGINE OIL SOON This message displays when the engine oil needs to be changed. When you change the engine oil, be sure to reset the CHANGE ENGINE OIL SOON message. See Engine Oil Life Syst ...