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:

    Ignition Positions (Key Access)
    Ignition Positions (Key Access) The ignition switch has four different positions. Notice: Using a tool to force the key to turn in the ignition could cause damage to the switch or break t ...

    Transmission
    Driver Shift Control (DSC) Driver Shift Control (DSC) allows you to shift an automatic transmission similar to a manual transmission. To use the DSC feature: 1. Move the shift lever from D (Drive) ...

    Vehicle Care/Appearance Materials
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