Check Gas Cap Light

If your vehicle has this

If your vehicle has this light, it will come on if your gas cap is not securely fastened.

    See also:

    When to Change Engine Oil
    This vehicle has a computer system that indicates when to change the engine oil and filter. This is based on engine revolutions and engine temperature, and not on mileage. Based on driving condi ...

    Retained Accessory Power (RAP)
    These vehicle accessories may be used for up to 10 minutes after the engine is turned off: Audio System Power Windows Sunroof The power windows and sunroof will continue to work for up to ...

    Your Responsibility
    You may need to increase the volume of your radio to hear the OnStar® advisor. If the light next to the OnStar® buttons is red, this means that your system is not functioning properly and should ...