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:

    Touch Screen Buttons
    Touch screen buttons are on the screen and highlighted when a feature is available. Some toggle screen buttons highlight when active and gray out when inactive. ...

    Setting Cruise Control
    If the cruise button is on when not in use, it could get bumped and go into cruise when not desired. Keep the cruise control switch off when cruise is not being used. 1. Press to turn the cr ...

    Automatic Headlamp System
    When the exterior lamp control is set to AUTO and it is dark enough outside, the headlamps come on automatically. There is a light sensor located on top of the instrument panel. Do not cover the ...