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 vehicle is equipped with the Tire Pressure Monitoring System. If a diagnostics check is needed between e-mails, push OnStar Additional Information , and an Advisor can run a check.

    See also:

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    There are a few ways to store presets. Up to 36 preset stations can be stored. AM, FM, and XM, if equipped, can be mixed. 1. From the AM, FM, or XM main page, press and hold one of the pre ...

    Safety, Features & Styling
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    Malfunction Indicator Lamp
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