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.

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    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 vehic ...

    Airbag On-Off Switch
    If one of the switches pictured in the following illustrations is located in the glove box, the vehicle has an airbag on-off switch that you can use to manually turn on or off the right front passenge ...

    Washer Fluid Messages
    WASHER FLUID LOW ADD FLUID This message displays when the windshield washer fluid is low. Fill the windshield washer fluid reservoir as soon as possible. See Engine Compartment Overview on page 10 ...