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:

    Driving at Night
    Night driving is more dangerous than day driving because some drivers are likely to be impaired—by alcohol or drugs, with night vision problems, or by fatigue. Night driving tips include: • ...

    Lighting
    Select the Lighting menu and the following will be displayed: Exit Lighting Vehicle Locator Lights Exit Lighting This allows the selection of how long the exterior lamps stay on when leaving ...

    Muting a Call
    During a call, all sounds from inside the vehicle can be muted so that the person on the other end of the call cannot hear them. To mute a call, press , and then say “Mute Call.”. To can ...